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Lithium acetylide(Li2(C2)) (6CI,7CI,8CI,9CI)Appearance:Off white to slight yellow solid Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By
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Lithium acetylide(Li2(C2)) (6CI,7CI,8CI,9CI)Appearance:Off white to slight yellow solid Storage:Stored in shaded, cool and dry places Package:1L 5L 10L 25L bottle Application:pharma intermediate Transportation:Handle with cares to avoid damaging the
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inquiryn-butyllithium
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
A
N-(α-methylbenzyl)pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine at 20℃; Stage #2: With methanol | A 80% B n/a |
thiophene
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: thiophene; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 78% B n/a |
2-Methylthiophene
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: 2-Methylthiophene; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 77% B n/a |
n-butyllithium
A
N-(α-methylbenzyl)pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(α-methylbenzyl)-3-(trimethylsilyl)-2-propynylamine at 20℃; Stage #2: With methanol | A 71% B n/a |
n-butyllithium
N-(prop-2-yn-1-yl)cyclohexanamine
A
N,N-cyclohexyl-n-pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(prop-2-yn-1-yl)cyclohexanamine at 20℃; Stage #2: With methanol | A 70% B n/a |
tetrachloromethane
lithium
B
ethenetetrayl-tetrakis-lithium
C
dilithium acetylide
Conditions | Yield |
---|---|
In neat (no solvent) reaction of an excess of gaseous Li with gaseous CCl4 at 800-1000°C (high vac.);; | A 10-18 B 61% C 20% |
Conditions | Yield |
---|---|
Stage #1: furan; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 58% B n/a |
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
tert.-butyl lithium
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine; tert.-butyl lithium at 20℃; Stage #2: With methanol | A 50% B n/a |
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
phenyllithium
A
N-benzyl-1-phenylethylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine; phenyllithium at 20℃; Stage #2: With methanol | A 39% B n/a |
2-thienyl lithium
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: 2-thienyl lithium; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine at 20℃; Stage #2: With methanol | A 38% B n/a |
2-lithiofuran
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
A
(RS)-N-(furan-2-ylmethyl)-N-(α-methylbenzyl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: 2-lithiofuran; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 29% B n/a |
methyllithium
A
methane
B
dilithiomethane
C
propadienetetrayl-tetrakis-lithium
D
dilithium acetylide
Conditions | Yield |
---|---|
at 223 - 226℃; Yield given. Yields of byproduct given; |
cis-1,2-Dilithioethylen
A
vinyllithium
B
dilithium acetylide
Conditions | Yield |
---|---|
Title compound not separated from byproducts; |
trans-1,2-Dilithioethylen
A
vinyllithium
B
dilithium acetylide
Conditions | Yield |
---|---|
Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
With dilithiumethylene Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; diethyl ether for 2h; Ambient temperature; | |
With n-butyllithium In tetrahydrofuran |
Conditions | Yield |
---|---|
With n-butyllithium In hexane at -10℃; for 0.75h; Yield given; |
Conditions | Yield |
---|---|
In melt Electrolysis; graphite electrodes, graphite dissoln. in molten Li (temp.>600°C); |
Conditions | Yield |
---|---|
In neat (no solvent, solid phase) heated at 900°C for 12 h in Nb ampoule; |
Conditions | Yield |
---|---|
In hexane inert atmosphere, diln. of soln. of n-BuLi with freshly distilled hexane, cooling to -15°C, passing of HCCH through the soln. at a temp. below -10°C, further bubbling of HCCH through the soln. (0.5 h), warming to room temp., reflux (2 h); filtration, reduction of volume (vacuum), washing (hexane), filtration, drying (60°C, 0.5 Torr), yield 82%; |
Conditions | Yield |
---|---|
In melt byproducts: LiCl, NbCl4; compds. melted in quartz-glass ampoule at 530°C for 15 h; slowly (36 h) cooled to 300°C, washed with i-PrOH; | 90% |
1,5-dichlorodecamethylpentasilane
dilithium acetylide
3,3,4,4,5,5,6,6,7,7-decamethyl-3,4,5,6,7-pentasilacycloheptyne
Conditions | Yield |
---|---|
80% |
dilithium acetylide
(diethylamino)dimethylsilyl-triflat
Conditions | Yield |
---|---|
In diethyl ether for 0.5h; Ambient temperature; | 78% |
trimethyltin(IV)chloride
dilithium acetylide
bis(trimethyltin)acetylene
Conditions | Yield |
---|---|
In pentane byproducts: LiCl; inert atmosphere, addn. of soln. of (CH3)3SnCl to suspension of Li2C2 at-25°C (40 min), warming to room temp., reflux (1 h); filtration from LiCl, concn., recrystn. (pentane, -78°C), drying (40°C, 5 Torr); | 76% |
Conditions | Yield |
---|---|
In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide rt, 16 h; reflux, 2 h; | 72% |
3-(tert-butyldimethylsilyloxy)propyl bromide
dilithium acetylide
1-(tert-butyldimethylsilyloxy)-4-pentyne
Conditions | Yield |
---|---|
In dimethyl sulfoxide at 0℃; | 68.5% |
Conditions | Yield |
---|---|
In diethyl ether at 25℃; for 3h; | 66% |
1,4-dichloropermethyltetrasilane
dilithium acetylide
octamethyltetrasilacyclohexyne
Conditions | Yield |
---|---|
65% |
Conditions | Yield |
---|---|
In pentane Ar atmosphere, addn. of soln. of (CH3)3SnBr to suspension of Li2C2 at -25°C (40 min), warming to room temp., reflux (1 h); filtration from LiCl, concn., recrystn. (pentane, -78°C), drying (40°C, 5 Torr); | 64% |
dilithium acetylide
1,2-bis<2-(chlorodimethylsilyl)ethyl>-1,1,2,2-tetramethyldisilane
3,3,6,6,7,7,10,10-octamethyl-3,6,7,10-tetrasilacyclodecyne
Conditions | Yield |
---|---|
In tetrahydrofuran Ambient temperature; | 62.2% |
dilithium acetylide
Conditions | Yield |
---|---|
In tetrahydrofuran (Ar), at room temp. for 12 h; washed (brine), evapd., rinzed (CH2Cl2), recrystd.(THF), elem. anal.; | 42% |
dilithium acetylide
Conditions | Yield |
---|---|
In tetrahydrofuran under Ar atm. using Schlenk techniques; LiCCLi transferred to THF soln. of Ru complex; stirred at room temp. overnight; to the ice-chilled soln. added satd. aq. soln. of NaCl; org. layer sepd.; washed aq. satd. soln. of NaCl; dried (Na2SO4); solvent removed; ppt. collected by filtration; washed (CH2Cl2); residue dried (vac.) overnight; elem. anal.; | 42% |
1,2-bis[2-(chlorodimethylgermyl)ethyl]-1,1,2,2-tetramethyldigermane
dilithium acetylide
3,3,6,6,7,7,10,10-octamethyl-3,6,7,10-tetragermacyclodecyne
Conditions | Yield |
---|---|
In tetrahydrofuran mixing of solns. of Li salt and Ge compound (room temp., 5 h), stirring (overnight); Kugelrohr distillation; | 23% |
bis(cyclopentadienyl)titanium dichloride
dilithium acetylide
trimethylphosphane
μ-(η1:η1-ethendiylidnene)-bis{bis(η5-cyclopentadienyl)(trimethylphosphane)titanium}
Conditions | Yield |
---|---|
With Mg In tetrahydrofuran Ar atmosphere; addn. of Li2C2 in THF to soln. of Ti compd. in THF (20°C), stirring (20°C, 12 h), addn. of PMe3 and Mg, warming (27°C), stirring (24 h); removal of solvent (0.5 Torr), addn. of toluene, filtration, removal of toluene (0.5 Torr), addn. of THF, standing (2 d), sepn., drying (Ar stream); not pure; | 20% |
dilithium acetylide
Conditions | Yield |
---|---|
With THF In tetrahydrofuran 30 min stirring, under Ar; concg., pptn. with diethylether, washing with ether, drying in vac.; elem.anal.; | 18% |
trimethyltin(IV)chloride
dilithium acetylide
acetylene
bis(trimethyltin)acetylene
Conditions | Yield |
---|---|
In hexane excess of C2H2; | 10% |
chlorotriethylstannane
dilithium acetylide
acetylene
A
triethylethynylstannane
B
bis(triethylstannyl)ethyne
Conditions | Yield |
---|---|
In hexane excess of C2H2; | A 10% B n/a |
trifluoromethylsulfonic anhydride
dilithium acetylide
cyclopenta-1,3-diene
Conditions | Yield |
---|---|
In diethyl ether at -20℃; | 1.3% |
Conditions | Yield |
---|---|
(i) , (ii) BrCN, NaOMe, (iii) EtCO2H; Multistep reaction; |
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