Tetrahedron

Transformation of ketones into 1-chloro and 1, 1-dichloro-1-alkenes by means of a polychloromethane-titanocene (II) system

T Takeda, Y Endo, ACS Reddy, R Sasaki, T Fujiwara

Index: Takeda, Takeshi; Endo, Yumi; Reddy, A. Chandra Sheker; Sasaki, Rika; Fujiwara, Tooru Tetrahedron, 1999 , vol. 55, # 9 p. 2475 - 2486

Full Text: HTML

Citation Number: 33

Abstract

The olefination of ketones using the organotitanium species formed from Cp2Ti [P (OEt) 3] 2 and polychloromethane was studied. The reaction of the organotitanium species prepared from carbon tetrachloride with ketones produced the 1, 1-dichloro-1-alkenes in good yields even when dialkyl ketones were employed. The similar olefination of ketones using chloroform afforded the 1-chloro-1-alkenes and 1, 1-dichloro-1-alkenes, the ratio of which ...