From carboxylic acids to the trifluoromethyl group using BrF3
摘要:
Organic trifluoromethyl derivatives were made from aromatic and aliphatic carboxylic acids by transforming them first into the corresponding dithioesters followed by reaction with bromine trifluoride under mild conditions (0 degrees C, 2 min). (C) 2010 Elsevier Ltd. All rights reserved.
The froth flotation of a metal sulfide mineral is carried out using a thioamide as the collector in which the thioamide is of the formula ##STR1## R designating C.sub.5 to C.sub.17 alkyls, R' being H or (CH.sub.2).sub.n OR" and n an integer of 1 to 6, while Z is --OR" or ##STR2## where R" means H, CH.sub.3 or C.sub.2 H.sub.5.
LEVESQUE, G.;GRESSIER, J. -C.;PROUST, M., SYNTHESIS, BRD, 1981, N 12, 963-965
作者:LEVESQUE, G.、GRESSIER, J. -C.、PROUST, M.
DOI:——
日期:——
US4618416A
申请人:——
公开号:US4618416A
公开(公告)日:1986-10-21
From carboxylic acids to the trifluoromethyl group using BrF3
作者:Or Cohen、Eyal Mishani、Shlomo Rozen
DOI:10.1016/j.tet.2010.03.045
日期:2010.5
Organic trifluoromethyl derivatives were made from aromatic and aliphatic carboxylic acids by transforming them first into the corresponding dithioesters followed by reaction with bromine trifluoride under mild conditions (0 degrees C, 2 min). (C) 2010 Elsevier Ltd. All rights reserved.
4,5-Dihydroimidazoles from Dithiocarboxylic Esters, Thiocarboxamides, or Nitriles