Efficient carboncarbon bond formation with thermally stable 1,1-dihalo-2,2,2-trifluoroethylzinc reagent
作者:Makoto Fujita、Tomoe Morita、Tamejiro Hiyama
DOI:10.1016/s0040-4039(00)84468-8
日期:1986.1
The zinc carbenoids CF3CX2ZnX, prepared from CF3CX3 and zinc powder in dimethylformamide, were found thermally stable to add to aldehyde carbonyls in excellent yields.
Efficient Carbonyl Addition of Polyfluorochloroethyl, -ethylidene, and -ethenyl Units by Means of 1,1,1-Trichloro-2,2,2-trifluoroethane and Zinc
作者:Makoto Fujita、Tamejiro Hiyama
DOI:10.1246/bcsj.60.4377
日期:1987.12
powder in N,N-dimethylformamide and was allowed to add to carbonyls of aldehydes and α-keto esters in excellent yields to give 1-substituted 2,2-dichloro-3,3,3-trifluoro-1-propanols. Employment of excess zinc induced further reductive β-elimination to afford 1-substituted 2-chloro-3,3,3-trifluoropropenes (3) and 1-substituted 2-chloro-3,3-difluoro-2-propen-1-ols (4). Exclusive formation of 3 was achieved
Synthetic utility of HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane): the reaction between HCFC-123 and aldehydes using zinc
作者:Masanori Tamura、Akira Sekiya
DOI:10.1016/0022-1139(94)03141-l
日期:1995.3
HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane) reacted with zinc and aldehydes to afford predominantly either 1-substituted 2-chloro-3,3-difluoro-2-propen-1-ols or 1-substituted 2,2-dichloro-3,3,3-trifluoro-1-propanols. The reactions proceeded via 1,1-dichloro-2,2,2-trifluoroethylzinc chloride as an organozinc intermediate.