Product Name

  • Name

    1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

  • EINECS 230-625-6
  • CAS No. 7226-23-5
  • Article Data21
  • CAS DataBase
  • Density 1.024 g/cm3
  • Solubility Soluble in water and most organic solvents
  • Melting Point -20 °C
  • Formula C6H12N2O
  • Boiling Point 240.2 °C at 760 mmHg
  • Molecular Weight 128.174
  • Flash Point 85.3 °C
  • Transport Information
  • Appearance clear colorless to slightly yellowish liquid
  • Safety 23-26-36/37/39-45
  • Risk Codes 22-36-43-62-41
  • Molecular Structure Molecular Structure of 7226-23-5 (1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)
  • Hazard Symbols HarmfulXn
  • Synonyms 1,3-Dimethyl-2-oxohexahydropyrimidine;1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone;1,3-Dimethyl-3,4,5,6-tetrahydro-2-pyrimidinone;1,3-Dimethylpropyleneurea;DMPU (solvent);N,N'-Dimethyl-1,3-propanediamine cyclic urea;N,N'-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone;N,N'-Dimethyl-N,N'-propyleneurea;N,N'-Dimethyltrimethyleneurea;
  • PSA 23.55000
  • LogP 0.24950

Synthetic route

carbon monoxide
201230-82-2

carbon monoxide

1,3-bis(methylamino)propane
111-33-1

1,3-bis(methylamino)propane

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
Stage #1: carbon monoxide; 1,3-bis(methylamino)propane With selenium at 20℃; under 750.075 Torr; for 2h; neat (no solvent);
Stage #2: With oxygen at 20℃; under 750.075 Torr; for 1h; neat (no solvent);
94%
With iodine; potassium carbonate; tungsten hexacarbonyl In dichloromethane at 20℃; under 76005.1 Torr;52%
β-(4-hydroxyphenyl)ethyl iodoacetamide
53527-07-4

β-(4-hydroxyphenyl)ethyl iodoacetamide

3-(((3-acetamido-4-methoxy-2-methyl-4-oxobutan-2-yl)disulfanecarbonyl)(methyl)amino)-N-methylpropan-1-aminium trifluoroacetate

3-(((3-acetamido-4-methoxy-2-methyl-4-oxobutan-2-yl)disulfanecarbonyl)(methyl)amino)-N-methylpropan-1-aminium trifluoroacetate

A

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

B

β-(4-hydroxyphenyl)ethyl-2-aminoacetamide
55710-99-1

β-(4-hydroxyphenyl)ethyl-2-aminoacetamide

C

methyl 2-acetamido-3-((2-((4-hydroxyphenethyl)amino)-2-oxoethyl)disulfaneyl)-3-methylbutanoate

methyl 2-acetamido-3-((2-((4-hydroxyphenethyl)amino)-2-oxoethyl)disulfaneyl)-3-methylbutanoate

D

C18H26N2O5S

C18H26N2O5S

Conditions
ConditionsYield
With diethylenetriaminopentaacetic acid In aq. buffer at 37℃; for 7h; pH=7.4; Kinetics; Solvent; pH-value;A n/a
B n/a
C 90%
D n/a
3,4,5,6-tetrahydropyrimidine-2-thione
2055-46-1

3,4,5,6-tetrahydropyrimidine-2-thione

methyl iodide
74-88-4

methyl iodide

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride for 5h; Heating;81%
With 18-crown-6 ether; N-benzyl-N,N,N-triethylammonium chloride for 2h; Heating;81%
3,4,5,6-tetrahydropyrimidin-2(1H)-one
1852-17-1

3,4,5,6-tetrahydropyrimidin-2(1H)-one

dimethyl sulfate
77-78-1

dimethyl sulfate

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In 1,4-dioxane at 60℃; for 5h;78.8%
2,2'-oxy-bis(1,3-dimethyl-tetrahydropyrimidinium) bis(trifluoromethanesulfonate)

2,2'-oxy-bis(1,3-dimethyl-tetrahydropyrimidinium) bis(trifluoromethanesulfonate)

malononitrile
109-77-3

malononitrile

A

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

B

(1,3-dimethyl-tetrahydro-pyrimidin-2-ylidene)-malononitrile
55727-22-5

(1,3-dimethyl-tetrahydro-pyrimidin-2-ylidene)-malononitrile

Conditions
ConditionsYield
With dimethylaminomethyl-polystyrene In acetonitrile at 81℃; for 8.5h;A n/a
B 78%
carbon dioxide
124-38-9

carbon dioxide

1,3-Dichloropropane
142-28-9

1,3-Dichloropropane

methylamine
74-89-5

methylamine

A

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

B

3-methyl-1,3-oxazinan-2-one
96690-06-1

3-methyl-1,3-oxazinan-2-one

Conditions
ConditionsYield
In water at 120℃; under 3750.38 Torr; for 2h;A 64%
B 15%
N-(tert-butyl)oxycarbonyl-N,N’-trimethyl-1,3-diaminopropane
123183-72-2

N-(tert-butyl)oxycarbonyl-N,N’-trimethyl-1,3-diaminopropane

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: N,N-dimethyl-formamide / 5 h / 0 - 20 °C
2: dichloromethane / 1 h / 20 °C / Inert atmosphere
3: 37 °C / pH 5.5
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / N,N-dimethyl-formamide / 1 h / 0 - 20 °C / Inert atmosphere
2: dichloromethane / 1 h / 20 °C / Inert atmosphere
3: 37 °C / pH 5.5
View Scheme
1,3-bis(methylamino)propane
111-33-1

1,3-bis(methylamino)propane

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: tetrahydrofuran / 22 h / 0 - 20 °C / Inert atmosphere
2: N,N-dimethyl-formamide / 5 h / 0 - 20 °C
3: dichloromethane / 1 h / 20 °C / Inert atmosphere
4: 37 °C / pH 5.5
View Scheme
Multi-step reaction with 4 steps
1: tetrahydrofuran / 22 h / 0 - 20 °C / Inert atmosphere
2: triethylamine / N,N-dimethyl-formamide / 1 h / 0 - 20 °C / Inert atmosphere
3: dichloromethane / 1 h / 20 °C / Inert atmosphere
4: 37 °C / pH 5.5
View Scheme
C28H32N4O6*C2HF3O2

C28H32N4O6*C2HF3O2

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
at 37℃; pH=5.5;
C26H28N4O5*C2HF3O2

C26H28N4O5*C2HF3O2

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Conditions
ConditionsYield
at 37℃; pH=5.5;
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

bis(pinacol)diborane
73183-34-3

bis(pinacol)diborane

1-methyl-3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)tetrahydropyrimidin-2(1H)-one
1391930-67-8

1-methyl-3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)tetrahydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With C25H36O2P2Ru In neat (no solvent) at 120℃; for 24h; Catalytic behavior; Green chemistry;98%
With (1,5-cyclooctadiene)(methoxy)iridium(I) dimer; 8-(diisopropylsilyl)quinoline In 1,4-dioxane at 120℃; for 20h; Inert atmosphere; Sealed tube;96%
With methoxy(cyclooctadiene)rhodium(I) dimer In hexane at 40℃; for 1h; Inert atmosphere; Sealed tube;75%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

samarium diiodide bis(tetrahydrofuran)
94138-28-0

samarium diiodide bis(tetrahydrofuran)

[Sm(dimethylpropyleneurea)6]I2

[Sm(dimethylpropyleneurea)6]I2

Conditions
ConditionsYield
In tetrahydrofuran 6-fold excess of ligand added to soln. of Sm complex in THF at room temp. under Ar; left to stand for 2 h; evapd., washed with toluene; elem. anal.; X-ray detn.;97%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

bis(pinacol)diborane
73183-34-3

bis(pinacol)diborane

A

1-methyl-3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)tetrahydropyrimidin-2(1H)-one
1391930-67-8

1-methyl-3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)tetrahydropyrimidin-2(1H)-one

B

C3H6N(CH3)CONCH(BO2C2(CH3)4)2

C3H6N(CH3)CONCH(BO2C2(CH3)4)2

Conditions
ConditionsYield
With methoxy(cyclooctadiene)rhodium(I) dimer In hexane at 25℃; for 1h; Inert atmosphere; regioselective reaction;A 97%
B 7%
With catalyst:[Rh(OCH3)(C8H12)]2 and silicaphosphine In hexane diboron, amide, catalyst:(Rh(OCH3)(C8H12))2, silica-supported triarylphosphine, hexane, 25°C, 1 h or 70°C 3 h;A 85%
B 2%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

methylamine hydroiodide
14965-49-2

methylamine hydroiodide

lead(II) iodide

lead(II) iodide

CH6N(1+)*Pb(2+)*3I(1-)*2C6H12N2O

CH6N(1+)*Pb(2+)*3I(1-)*2C6H12N2O

Conditions
ConditionsYield
at 80℃; for 0.5h;96%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Pentafluoroethyl iodide
354-64-3

Pentafluoroethyl iodide

diethylzinc
557-20-0

diethylzinc

Zn(C2F5)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Zn(C2F5)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Conditions
ConditionsYield
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;95%
In hexane at -60 - 0℃; for 48h; Inert atmosphere;86%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

1,1,1,2,2,3,3-heptafluoro-3-iodo-propane
754-34-7

1,1,1,2,2,3,3-heptafluoro-3-iodo-propane

diethylzinc
557-20-0

diethylzinc

Zn(nC3F7)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Zn(nC3F7)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Conditions
ConditionsYield
In hexane at -60 - -20℃; for 48h; Inert atmosphere;95%
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;93%
In hexane; toluene at -41 - -5℃; for 12h; Inert atmosphere;92%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

Pentafluoroethyl iodide
354-64-3

Pentafluoroethyl iodide

diethylzinc
557-20-0

diethylzinc

C4F10Zn*2C6H12N2O

C4F10Zn*2C6H12N2O

Conditions
ConditionsYield
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;95%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

iododifluoromethane
1493-03-4

iododifluoromethane

diethylzinc
557-20-0

diethylzinc

(1,3-dimethyl-3,4,5,6-tetrahydro-2-pyrimidinone)2Zn(CF2H)2

(1,3-dimethyl-3,4,5,6-tetrahydro-2-pyrimidinone)2Zn(CF2H)2

Conditions
ConditionsYield
In hexane; pentane at -20 - 20℃; Inert atmosphere; Glovebox;94%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

1,1,1,2,2,3,3-heptafluoro-3-iodo-propane
754-34-7

1,1,1,2,2,3,3-heptafluoro-3-iodo-propane

diethylzinc
557-20-0

diethylzinc

C6F14Zn*2C6H12N2O

C6F14Zn*2C6H12N2O

Conditions
ConditionsYield
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;93%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

triphenyltin dimesylamide
172747-89-6

triphenyltin dimesylamide

triphenyltin(IV)-dimesylamide-N,N'-dimethylpropyleneurea (1/1)

triphenyltin(IV)-dimesylamide-N,N'-dimethylpropyleneurea (1/1)

Conditions
ConditionsYield
In acetonitrile N2 atm.; equimolar ratio, stirring (20°C), refluxing (2 h); evapn., addn. of Et2O, digestion, filtn., washing (Et2O), drying (vac.);elem. anal.;92%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

dodecafluoro-1,6-diiodohexane
375-80-4

dodecafluoro-1,6-diiodohexane

diethylzinc
557-20-0

diethylzinc

[(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2Zn((CF2)6)2Zn(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2]

[(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2Zn((CF2)6)2Zn(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2]

Conditions
ConditionsYield
Stage #1: dodecafluoro-1,6-diiodohexane; diethylzinc In hexane; pentane at -78 - 20℃; Inert atmosphere; Glovebox;
Stage #2: 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone In hexane; pentane at 20℃; Inert atmosphere; Glovebox;
92%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

iododifluoromethane
1493-03-4

iododifluoromethane

diethylzinc
557-20-0

diethylzinc

[bis(difluoromethyl)zinc(dmpu)2]

[bis(difluoromethyl)zinc(dmpu)2]

Conditions
ConditionsYield
In hexane Inert atmosphere;92%
In hexane; pentane at -20 - 20℃; for 2h;89%
In hexane; pentane at -20 - 20℃; for 2h;89%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

2-amino-benzthiazole
136-95-8

2-amino-benzthiazole

Benzothiazol-2-ylamine; compound with 1,3-dimethyl-tetrahydro-pyrimidin-2-one
144467-83-4

Benzothiazol-2-ylamine; compound with 1,3-dimethyl-tetrahydro-pyrimidin-2-one

Conditions
ConditionsYield
In toluene at 0℃; for 24h;91%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

{(η5-C5Me5)2YCl}2
94348-89-7

{(η5-C5Me5)2YCl}2

(C5(CH3)5)2YCl((CH2)3(NCH3)2CO)
431887-85-3

(C5(CH3)5)2YCl((CH2)3(NCH3)2CO)

Conditions
ConditionsYield
In benzene (N2); addn. of a soln. of ligand in benzene to a slurry of yttrium complex in benzene, stirring for 1 h; evapn.; elem. anal.;90%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

iodotrifluoromethane
2314-97-8

iodotrifluoromethane

diethylzinc
557-20-0

diethylzinc

(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2Zn(CF3)2

(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2Zn(CF3)2

Conditions
ConditionsYield
In hexane at -60 - -20℃; for 48h; Inert atmosphere;90%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

iodotrifluoromethane
2314-97-8

iodotrifluoromethane

diethylzinc
557-20-0

diethylzinc

(CF3)2Zn(DMPU)2

(CF3)2Zn(DMPU)2

Conditions
ConditionsYield
In hexane at -60 - -20℃; for 72h; Inert atmosphere;90%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

iodotrifluoromethane
2314-97-8

iodotrifluoromethane

diethylzinc
557-20-0

diethylzinc

C6H12N2O*C2F6Zn

C6H12N2O*C2F6Zn

Conditions
ConditionsYield
In hexane at -60 - -20℃; for 72h; Inert atmosphere;90%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

9H-carbazole
86-74-8

9H-carbazole

2,2'-diiodobiphenyl
2236-52-4

2,2'-diiodobiphenyl

9-(4'-iodine-[1,1'-biphenyl]-4-yl)-9H-carbazole
207447-27-6

9-(4'-iodine-[1,1'-biphenyl]-4-yl)-9H-carbazole

Conditions
ConditionsYield
With potassium carbonate; 18-crown-6 ether; copper(I) iodide In hexane; water; toluene89%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

1-iodo-2,2,3,3,4,4,5,5,5-nonafluorobutane
423-39-2

1-iodo-2,2,3,3,4,4,5,5,5-nonafluorobutane

diethylzinc
557-20-0

diethylzinc

C8F18Zn*2C6H12N2O

C8F18Zn*2C6H12N2O

Conditions
ConditionsYield
In toluene at -35 - -5℃; for 24h; Inert atmosphere;89%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

1-iodo-2,2,3,3,4,4,5,5,5-nonafluorobutane
423-39-2

1-iodo-2,2,3,3,4,4,5,5,5-nonafluorobutane

diethylzinc
557-20-0

diethylzinc

Zn(C4F9)2(DMPU)2

Zn(C4F9)2(DMPU)2

Conditions
ConditionsYield
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;89%
In hexane at -35 - -5℃; for 24h; Inert atmosphere;89%
In hexane; toluene at -41 - -5℃; for 12h; Inert atmosphere;88%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

n-perfluorohexyl iodide
355-43-1

n-perfluorohexyl iodide

diethylzinc
557-20-0

diethylzinc

Zn(nC6F13)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Zn(nC6F13)2(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone)2

Conditions
ConditionsYield
In hexane at -60 - 0℃; for 48h; Inert atmosphere;88%
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;88%
In hexane; toluene at -41 - -5℃; for 12h; Inert atmosphere;87%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

n-perfluorohexyl iodide
355-43-1

n-perfluorohexyl iodide

diethylzinc
557-20-0

diethylzinc

C12F26Zn*2C6H12N2O

C12F26Zn*2C6H12N2O

Conditions
ConditionsYield
In hexane; toluene at -35 - -5℃; for 24h; Inert atmosphere;88%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

stavudin
3056-17-5

stavudin

2',3'-didehydro-3'-deoxythymidine N,N-dimethyl propylene urea solvate
938050-90-9

2',3'-didehydro-3'-deoxythymidine N,N-dimethyl propylene urea solvate

Conditions
ConditionsYield
In acetone at 56℃; for 0.25 - 0.5h; Product distribution / selectivity; Heating / reflux;87.5%
In acetone at 6 - 56℃; for 0.25h; Product distribution / selectivity;87.5%
In isopropyl alcohol at 70 - 75℃; for 0.25h; Product distribution / selectivity;86.7%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

triphenyltin dimesylamide
172747-89-6

triphenyltin dimesylamide

triphenyltin(IV)-dimesylamide-N,N'-dimethylpropyleneurea (1/2)

triphenyltin(IV)-dimesylamide-N,N'-dimethylpropyleneurea (1/2)

Conditions
ConditionsYield
In acetonitrile N2 atm.; 2 equiv. of ligand, stirring (20°C), refluxing (2 h); evapn., addn. of Et2O, digestion, filtn., washing (Et2O), drying (vac.);elem. anal.;87%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

3-(3-bromophenyl)-1,2,4-triazolo[3,4-a]isoquinoline
1356922-21-8

3-(3-bromophenyl)-1,2,4-triazolo[3,4-a]isoquinoline

9H-carbazole
86-74-8

9H-carbazole

3-[3-(9H-carbazol-9-yl)phenyl]-1,2,4-triazolo[3,4-a]isoquinoline
1356922-22-9

3-[3-(9H-carbazol-9-yl)phenyl]-1,2,4-triazolo[3,4-a]isoquinoline

Conditions
ConditionsYield
With sodium bicarbonate; potassium carbonate; copper(I) iodide; 18-crown-6 ether In chloroform86%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

samarium(III) trifluoromethanesulfonate

samarium(III) trifluoromethanesulfonate

[Sm(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone)6](O3SCF3)3

[Sm(1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone)6](O3SCF3)3

Conditions
ConditionsYield
In tetrahydrofuran Ar-atmosphere; addn. of 6 equiv. ligand to metal salt, standing for 1 h; solvent removal (reduced pressure);85%
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

formamidinium iodide

formamidinium iodide

lead(II) iodide

lead(II) iodide

CH5N2(1+)*Pb(2+)*3I(1-)*2C6H12N2O

CH5N2(1+)*Pb(2+)*3I(1-)*2C6H12N2O

Conditions
ConditionsYield
at 90℃; for 0.5h;85%
5-methyl-1,2,3,4-tetrazole
4076-36-2

5-methyl-1,2,3,4-tetrazole

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
7226-23-5

1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

zinc(II) nitrate hexahydrate

zinc(II) nitrate hexahydrate

ethanol
64-17-5

ethanol

Zn(5-methyltetrazole(-H))2·0.5(tetrahydro-1,3-dimethyl-2(1H) pyrimidine)·0.5(ethanol)

Zn(5-methyltetrazole(-H))2·0.5(tetrahydro-1,3-dimethyl-2(1H) pyrimidine)·0.5(ethanol)

Conditions
ConditionsYield
at 120℃; for 72h; Sealed tube;84%

1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone Specification

The IUPAC name of Dimethylpropyleneurea is 1,3-dimethyl-1,3-diazinan-2-one. With the CAS registry number 7226-23-5 and EINECS 230-625-6, it is also named as 2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-. The classification codes are Drug / Therapeutic Agent; TSCA Flag P [A commenced PMN (Premanufacture Notice) substance]. It is clear colorless to slightly yellowish liquid which is soluble in water and most organic solvents. Additionally, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 0.36; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.36; (4)ACD/LogD (pH 7.4): 0.36; (5)ACD/BCF (pH 5.5): 1.11; (6)ACD/BCF (pH 7.4): 1.11; (7)ACD/KOC (pH 5.5): 37.53; (8)ACD/KOC (pH 7.4): 37.53; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 23.55 Å2; (13)Index of Refraction: 1.473; (14)Molar Refractivity: 35.12 cm3; (15)Molar Volume: 125 cm3; (16)Polarizability: 13.92×10-24 cm3; (17)Surface Tension: 32.4 dyne/cm; (18)Density: 1.024 g/cm3; (19)Flash Point: 85.3 °C; (20)Enthalpy of Vaporization: 47.71 kJ/mol; (21)Boiling Point: 240.2 °C at 760 mmHg; (22)Vapour Pressure: 0.0386 mmHg at 25°C.

Preparation of Dimethylpropyleneurea: It can be obtained by tetrahydro-pyrimidin-2-one and sulfuric acid dimethyl ester. This reaction needs reagents K2CO3, TEBA and solvent dioxane at temperature of 60 °C. The reaction time is 5 hours. The yield is 78.8%.

Dimethylpropyleneurea can be obtained by tetrahydro-pyrimidin-2-one and sulfuric acid dimethyl ester

Uses of Dimethylpropyleneurea: It is a cyclic urea sometimes used as a polar, aprotic organic solvent. And it can react with trifluoro-methanesulfonic acid anhydride to get 2,2'-oxy-bis(1,3-dimethyl-tetrahydropyrimidinium) bis(trifluoromethanesulfonate). This reaction needs solvent CH2Cl2 by heating. The reaction time is 48 hours. The yield is 50%. 

Dimethylpropyleneurea can react with trifluoro-methanesulfonic acid anhydride to get 2,2'-oxy-bis(1,3-dimethyl-tetrahydropyrimidinium) bis(trifluoromethanesulfonate)

When you are using this chemical, please be cautious about it as the following:
It is not only harmful if swallowed, but also irritating to eyes. And it may cause sensitization by skin contact. So people should not breathe vapour. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

People can use the following data to convert to the molecule structure.
1. SMILES:O=C1N(C)CCCN1C
2. InChI:InChI=1/C6H12N2O/c1-7-4-3-5-8(2)6(7)9/h3-5H2,1-2H3 
3. InChIKey:GUVUOGQBMYCBQP-UHFFFAOYAB

The following are the toxicity data which has been tested.

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1300mg/kg (1300mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: ATAXIA

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
Journal of Medicinal Chemistry. Vol. 11, Pg. 214, 1968.

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