CAS No.689-97-4,1-Buten-3-yne Suppliers

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Synthetic route

: 110-57-6
trans-1,4-dichlorobut-2-ene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide; 2,3-dimethyl-2,3-butane diol; Aliquat 336 In Petroleum ether for 1.5h; Heating;	70%
With potassium hydroxide; calcium oxide In dimethyl sulfoxide; xylene at 120℃;
With potassium hydroxide; 2-Butoxyethanol In ethylene glycol at 170℃; for 1h; Yield given;
With potassium hydroxide; 2,3-dimethyl-2,3-butane diol; Aliquat 336 In various solvent(s) at 135℃; for 1.5h;

: 764-41-0
1,4-dichloro-2-butene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide; cetyldimethylbenzylammonium chloride In dimethyl sulfoxide at 90 - 100℃; for 1h;	69%
With ammonia; sodium amide
In ethylene glycol at 50℃; Inert atmosphere;

: 6048-18-6
1-cyclobutyl-2-(triphenylphosphoranylidene)ethan-1-one

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
at 800 - 850℃; under 0.01 Torr;	67%
at 850℃; for 3h;	67%

: 1335114-45-8
benzoic 2-methyl-3-furoic anhydride

A: 689-97-4
3-buten-1-yne

B: 42827-31-6
4-methylene-2-cyclobuten-1-one

C: 65-85-0
benzoic acid

Conditions

Conditions	Yield
at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent);	A 55% B 17% C n/a

...Expand

: 1335114-46-9
benzoic 3-methyl-2-furoic anhydride

A: 689-97-4
3-buten-1-yne

B: 42827-31-6
4-methylene-2-cyclobuten-1-one

C: 65-85-0
benzoic acid

Conditions

Conditions	Yield
at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent);	A 50% B 15% C n/a

...Expand

: 1574-41-0
Z-piperylene

A: 689-97-4
3-buten-1-yne

B: 2004-70-8
1-methylbuta-1,3-diene

C: 4461-48-7
4-methyl-2-pentene

D: 542-92-7
cyclopenta-1,3-diene

E: 106-99-0
buta-1,3-diene

F: 74-86-2
acetylene

Conditions

Conditions	Yield
at 20℃; under 0.4 Torr; Product distribution; Irradiation; variation of pressure and additives;	A 0.2% B 0.3% C 0.13% D 0.25% E 0.09% F 0.22%

...Expand

: 513-35-9
2-methyl-but-2-ene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
bei der Einw. dunkler elektrischer Entladungen;

: 690-94-8
dimethyl(vinylethynyl)carbinol

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide at 105 - 110℃;

: 34557-54-5
methane

: 689-97-4
3-buten-1-yne

: 2657-67-2
(2R,3S)-1,2,3,4-Tetrabromo-butane

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide at 120℃;

: 7013-11-8
2,3-dichlorobut-1-ene

A: 689-97-4
3-buten-1-yne

B: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 530℃; im Quarzrohr;

: 310447-99-5, 310448-01-2
3,4-dichlorobut-1-ene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With ammonia; sodium amide

: 13487-52-0
4-bromo-3-ethoxy-but-1-yne

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With zinc; butan-1-ol at 110 - 120℃;

: 623-11-0
1-methyl-4-nitrosobenzene

: buta-2,3-dienyl-trimethyl-ammonium; chloride

A: 689-97-4
3-buten-1-yne

B: 75-50-3
trimethylamine

...Expand

: 23418-85-1
3-butyn-1-yl p-toluenesulfonate

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide

: 1,2-bis-(4-methoxy-phenyl)-hex-5-en-3-yn-2-ol

A: 689-97-4
3-buten-1-yne

B: 120-44-5
1,4-di(4-methoxyphenyl)ethanone

: 116054-63-8
hexa-N-methyl-N,N'-but-2-enediyl-di-ammonium; dihydroxide

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
at 100 - 120℃; under 13 Torr;

: 106-99-0
buta-1,3-diene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
durch Crackung;

: 2028-63-9
but-3-yn-2-ol

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With basic aluminium sulfate at 240 - 260℃;

: 74-86-2
acetylene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With hydrogenchloride; ammonium chloride; copper(l) chloride at 50 - 75℃; unter Zusatz von Kupferpulver; Ausfuehrung der Reaktion unter Zusatz von Dispersionsmitteln wie Stearoyloxyaethansulfonsaeure;
With CuCl containing solid catalysts
With copper; ammonium chloride; copper(l) chloride Reagens4:Salzsaeure;

: 74-86-2
acetylene

A: 689-97-4
3-buten-1-yne

B: 821-08-9
hexa-1,5-dien-3-yne

Conditions

Conditions	Yield
With water; copper(l) chloride at 25 - 65℃; Gegenwart von Kupfer;
With water; ammonium chloride at 25 - 65℃; Gegenwart von Kupfer;
With hydrogenchloride; water at 25 - 65℃; Gegenwart von Kupfer;

: 74-86-2
acetylene

A: 689-97-4
3-buten-1-yne

B: 71-43-2
benzene

Conditions

Conditions	Yield
at 750℃; bei schnellem Leiten durch ein erhitztes Quarzrohr;
at 661.85℃; under 27 Torr; Kinetics; Further Variations:; Temperatures; Pressures;

: 14352-90-0
(3-chloro-but-2-enyl)-dimethyl-amine

: 926-57-8
1,3-dichloro-2-butene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With water beim anschliessenden Erwaermen mit wss. Natronlauge;

: 926-57-8
1,3-dichloro-2-butene

: 689-97-4
3-buten-1-yne

Conditions

Conditions	Yield
With potassium hydroxide; 2-Butoxyethanol; ethylene glycol at 165 - 170℃;
With potassium hydroxide In ethylene glycol tert-buty ether; ethylene glycol at -78℃; for 2h; Inert atmosphere;

: 106-97-8
n-butane

A: 689-97-4
3-buten-1-yne

B: 460-12-8
Butadiyne

C: 107-00-6
but-1-yne

D: 74-86-2
acetylene

Conditions

Conditions	Yield
bei der Einwirkung von Hochfrequenz-Entladungen;

...Expand

: 188290-36-0
thiophene

A: 689-97-4
3-buten-1-yne

B: 100945-80-0
2,3-butadienthial

C: 86596-77-2
cyclopropene-3-thiocarbaldehyde

D: 74-99-7
prop-1-yne

Conditions

Conditions	Yield
at -263.2℃; Irradiation; Further byproducts given;

...Expand

: 188290-36-0
thiophene

A: 689-97-4
3-buten-1-yne

B: 86596-77-2
cyclopropene-3-thiocarbaldehyde

C: 72110-26-0
Dewar thiophene

D: 74-99-7
prop-1-yne

Conditions

Conditions	Yield
at -263.2℃; Irradiation; Further byproducts given;

...Expand

: 98-82-8
Isopropylbenzene

A: 689-97-4
3-buten-1-yne

B: 292638-84-7
styrene

C: 100-41-4
ethylbenzene

D: 106-99-0
buta-1,3-diene

E: 74-86-2
acetylene

F: 98-83-9
isopropenylbenzene

Conditions

Conditions	Yield
With oxygen at 726.9℃; Mechanism; gas phase oxidation in flow reactor at various temperatures;

...Expand

: 107-00-6
but-1-yne

A: 689-97-4
3-buten-1-yne

B: 34557-54-5
methane

C: 74-84-0
ethane

D: 74-85-1
ethene

E: 463-49-0
1,2-propanediene

F: 74-86-2
acetylene

Conditions

Conditions	Yield
With bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyloxymethyl]bis(hydroxymethyl)methane under 10 Torr; Quantum yield; Irradiation; different pressures, different additives, different wavelengths;

...Expand

: 503-17-3
dimethylacetylene

A: 689-97-4
3-buten-1-yne

B: 590-18-1
(Z)-2-Butene

C: 34557-54-5
methane

D: 624-64-6
trans-2-Butene

E: 74-99-7
prop-1-yne

F: 74-86-2
acetylene

Conditions

Conditions	Yield
With bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyloxymethyl]bis(hydroxymethyl)methane under 1 Torr; Quantum yield; Irradiation; different pressures, different additives, different wavelengths;

...Expand

: 689-97-4
3-buten-1-yne

: 892-20-6
triphenylstannane

: 4104-92-1, 4104-91-0
Triphenyl-butadien-(1,2)-yl-(1)-zinn

Conditions

Conditions	Yield
In tetrahydrofuran 70°C, 3 h, molar ratio = 5:1, in presence of azobisisobutyronitrile;;	100%
In tetrahydrofuran 70°C, 3 h, molar ratio = 5:1, in presence of azobisisobutyronitrile;;	100%
With azo-bis-isobutyric acid dinitrile In tetrahydrofuran reaction for 3 h at 70°C in presence of azoisobutyric acid dinitrile;;

: 689-97-4
3-buten-1-yne

: 1708-32-3
2,5-dihydro-thiophene

Conditions

Conditions	Yield
With sodium hydrogensulfide; water In dimethyl sulfoxide at 90℃; for 4h;	97.8%

: 689-97-4
3-buten-1-yne

: 138234-21-6
((i)Pr2PC2H4P(i)Pr2)Pd(C2H4)

: 194996-69-5, 194996-76-4
Pd*(((CH3)2CH)2PCH2)2*HCCCHCH2=Pd((((CH3)2CH)2PCH2)2)(HCCCHCH2)

Conditions

Conditions	Yield
In pentane Ar-atmosphere, -30°C; crystn. (-78°C, 1 d), washing (pentane), drying (vac., -30°C); elem. anal.;	96%

: 689-97-4
3-buten-1-yne

: 1000-30-2
2,2,5-trimethyl-4-hexenal

: 6,6,9-trimethyldeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene at -78℃; for 0.5h; Inert atmosphere; Stage #2: 2,2,5-trimethyl-4-hexenal In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene at -78℃; for 3h; Inert atmosphere;	96%

: 689-97-4
3-buten-1-yne

: 993-67-9
2,2,3,3-tetramethylpent-4-enal

: 6,6,7,7-tetramethylnona-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: 2,2,3,3-tetramethylpent-4-enal In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere;	94%

: 689-97-4
3-buten-1-yne

: 110-93-0
6-Methyl-hept-5-en-2-on

: 116851-03-7
5,9-dimethyldeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: 6-Methyl-hept-5-en-2-on In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	92%

: 689-97-4
3-buten-1-yne

: 97764-12-0
5-cyclopentylidenepentan-2-one

: 1-cyclopentylidene-4-methyloct-7-en-5-yn-4-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: 5-cyclopentylidenepentan-2-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	92%

: 689-97-4
3-buten-1-yne

: 50-00-0
formaldehyd

: 40807-61-2
4-hydroxy-4-phenylpiperidin

: 94769-52-5
1-(pentyn-2'-en-4'-yl)-4-phenylpiperidin-4-ol

Conditions

Conditions	Yield
With copper(I) chloride In 1,4-dioxane at 110 - 115℃; for 14.5h;	91.8%

...Expand

: 689-97-4
3-buten-1-yne

: 15226-74-1, 61091-28-9, 61117-58-6
dicobalt octacarbonyl

: (but-3-en-1-yne)Co2(CO)6

Conditions

Conditions	Yield
In diethyl ether byproducts: CO; under Ar; Co2(CO)8 added to vinylacetylene in ether, stirred for 40 min; filtration through silica gel, evapn., residue dissolved in hexane, filtration, evapn.;	91%

: 689-97-4
3-buten-1-yne

: 25524-99-6
(E)-5-methylhept-5-en-2-one

: (E)-5,8-dimethyldeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: (E)-5-methylhept-5-en-2-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	89%

: 689-97-4
3-buten-1-yne

: 2228-92-4
1-(3-methylbut-2-en-1-yl)cyclopentane-1-carbaldehyde

: 1-(1-(3-methylbut-2-en-1-yl)cyclopentyl)pent-4-en-2-yn-1-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: 1-(3-methylbut-2-en-1-yl)cyclopentane-1-carbaldehyde In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	89%

: 689-97-4
3-buten-1-yne

: 4-(benzo[b]furan-2-yl)butan-2-one

: 1-(benzofuran-2-yl)-3-methylhept-6-en-4-yn-3-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: 4-(benzo[b]furan-2-yl)butan-2-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	88%

: 689-97-4
3-buten-1-yne

: 829-85-6
diphenylphosphane

: 73892-35-0
1,4-bis(diphenylphosphino)-2-butene

Conditions

Conditions	Yield
With potassium hydroxide In dimethyl sulfoxide for 1h; Ambient temperature;	87.7%

: 689-97-4
3-buten-1-yne

: 58191-81-4
2-isopropenyl-5-methyl-4-hexenal

: 6-isopropyl-9-methyldeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: 2-isopropenyl-5-methyl-4-hexenal In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere;	87%

: 689-97-4
3-buten-1-yne

: 56305-41-0
(E)-1-phenylhept-4-en-1-one

: (E)-5-phenylundeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; for 0.5h; Inert atmosphere; Stage #2: (E)-1-phenylhept-4-en-1-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	87%

: 689-97-4
3-buten-1-yne

: 108-94-1
cyclohexanone

: 2696-22-2
1-vinylethynyl-1-cyclohexanol

Conditions

Conditions	Yield
With potassium hydroxide In dimethyl sulfoxide for 2h; Ambient temperature;	85%
With potassium hydroxide; diethyl ether
With potassium hydroxide; xylene
With diethyl ether; sodium amide
(i) EtMgBr, (ii) /BRN= 385735/; Multistep reaction;

: 689-97-4
3-buten-1-yne

: 1067-52-3
tributyltin methoxide

: 994-80-9
but-3-en-1-yn-1-yltributylstannane

Conditions

Conditions	Yield
	85%
	85%

: 689-97-4
3-buten-1-yne

: 1067-21-6
triethylmethoxystannane

: 994-98-9
1-triethylstannylbut-3-ene-1-yne

Conditions

Conditions	Yield
room temp., 3-4 h;;	85%
room temp., 3-4 h;;	85%

: 689-97-4
3-buten-1-yne

: 10075-50-0
5-bromo-1H-indole

: (E)-3-(1H-indol-5-yl)acrylonitrile

Conditions

Conditions	Yield
With sodium 2'‐(dicyclohexylphosphaneyl)‐2,6‐diisopropyl‐[1,1'‐biphenyl]‐3‐sulfonate; sodium tetrachloropalladate; sodium carbonate In water; acetonitrile at 80℃; for 1h; Heck Reaction; Inert atmosphere; Microwave irradiation;	85%

: 689-97-4
3-buten-1-yne

: 1-(3-methylbut-2-en-1-yl)cyclohexane-1-carbaldehyde

: 1-(1-(3-methylbut-2-en-1-yl)cyclohexyl)pent-4-en-2-yn-1-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: 1-(3-methylbut-2-en-1-yl)cyclohexane-1-carbaldehyde In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere;	84%

: 689-97-4
3-buten-1-yne

: 688-61-9, 53588-88-8, 90721-85-0, 151452-33-4, 151452-35-6
Triallylborane

: 55951-37-6
3-vinyl-1,5-diallyl-1-bora-2-cyclohexene

Conditions

Conditions	Yield
In neat (no solvent) (Ar), mixed, cooled to 30-50°C, heated at 50-60°C for 1,5h; distd., elem. anal., IR, NMR;	83.5%

: 689-97-4
3-buten-1-yne

: 17157-02-7
9-iodo-m-carborane

: 925-90-6
ethylmagnesium bromide

: 98420-23-6
C2H2B10H9(CH2CHCC)

Conditions

Conditions	Yield
tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane; diethyl ether addn. of EtMgBr in ether to a soln. of acetylenic derivate in absolute dioxane (N2), heating for 1 h at 40°C, cooling, addn. of carborane and Pd-catalyst in dioxane, heating for 30 h at 60°C (stirring), monitoring of react. by GLC; pouring into a ca. 18% soln. of HCl, extn. by ether, washing with H2O, drying (MgSO4), distn. of solvents in vac., column chromy. of residue (silica gel), benzene-petroleum ether (bp 40-70°C) as eluent; elem.anal.;	82%

Yield

tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane; diethyl ether addn. of EtMgBr in ether to a soln. of acetylenic derivate in absolute dioxane (N2), heating for 1 h at 40°C, cooling, addn. of carborane and Pd-catalyst in dioxane, heating for 30 h at 60°C (stirring), monitoring of react. by GLC; pouring into a ca. 18% soln. of HCl, extn. by ether, washing with H2O, drying (MgSO4), distn. of solvents in vac., column chromy. of residue (silica gel), benzene-petroleum ether (bp 40-70°C) as eluent; elem.anal.;

82%

...Expand

: 689-97-4
3-buten-1-yne

: 18370-33-7
2-ethyl-5-methylhex-4-enal

: 6-ethyl-9-methyldeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: 2-ethyl-5-methylhex-4-enal In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere;	82%

: 689-97-4
3-buten-1-yne

: 1112-63-6
hexaethyldistannoxane

: 994-98-9
1-triethylstannylbut-3-ene-1-yne

Conditions

Conditions	Yield
room temp., 3-5 h;;	81.6%
room temp., 3-5 h;;	81.6%
In diethyl ether byproducts: (C2H5)3SnCCC6H5; room temp., 8 h, in presence of NaCCC6H5;;	39%
In diethyl ether byproducts: (C2H5)3SnCCC6H5; room temp., 8 h, in presence of NaCCC6H5;;	39%

: 689-97-4
3-buten-1-yne

: 688-61-9, 53588-88-8, 90721-85-0, 151452-33-4, 151452-35-6
Triallylborane

: 55951-42-3
1-methoxy-5-allyl-3-vinyl-1-bora-2-cyclohexene

Conditions

Conditions	Yield
With methanol In neat (no solvent) byproducts: C3H6; (Ar), mixed at 50-60°C, heated at 55°C for 1 h, treated with CH3OH; distd., elem. anal.;	81%

: 689-97-4
3-buten-1-yne

: 85416-29-1
(Z)-10-Iodo-1-(2-tetrahydropyranyloxy)-9-decene

: 1218999-61-1
2-(tetradeca-9,13-dien-11-yn-1-yloxy)tetrahydro-2H-pyran

Conditions

Conditions	Yield
With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide In pyrrolidine at 0 - 20℃; for 3h; Sonogashira coupling; Inert atmosphere;	81%

: 689-97-4
3-buten-1-yne

: (Z)-1-phenylhept-4-en-1-one

: (Z)-5-phenylundeca-1,8-dien-3-yn-5-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; for 0.5h; Inert atmosphere; Stage #2: (Z)-1-phenylhept-4-en-1-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	81%

: 689-97-4
3-buten-1-yne

: 2520-57-2
2,10-dimethyl-2,9-undecadien-6-one

: 6-(but-3-en-1-yn-1-yl)-2,10-dimethylundeca-2,9-dien-6-ol

Conditions

Conditions	Yield
Stage #1: 3-buten-1-yne With n-butyllithium In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78℃; Inert atmosphere; Stage #2: 2,10-dimethyl-2,9-undecadien-6-one In tetrahydrofuran; 5,5-dimethyl-1,3-cyclohexadiene; hexane at -78 - 20℃; for 5h; Inert atmosphere;	81%

: 689-97-4
3-buten-1-yne

: 830-13-7
cyclododecanone

: 75279-83-3
1-(3-buten-1-ynyl)-1-cyclododecanol

Conditions

Conditions	Yield
With potassium hydroxide In diethyl ether at 20℃; for 6h;	80%

: 689-97-4
3-buten-1-yne

: tetracarbonyldicyclopentadienyldimolybdenum

: 137966-85-9
(Mo(C5H5)(CO)2)2(HCCCHCH2)

Conditions

Conditions	Yield
In toluene addn. of cold soln. of ligand to soln. of Mo-complex at -40°C; stirring for 18h at room temp. (N2); evapn. (vac.); extgn. complex (hexane); removing hexane; elem. anal.;	80%

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