Chiral Phosphoric-Acid-Catalyzed Regioselective and Enantioselective C7-Friedel–Crafts Alkylation of 4-Aminoindoles with Trifluoromethyl Ketones
作者:Lu Cai、Yunlong Zhao、Tongkun Huang、Shanshui Meng、Xian Jia、Albert S. C. Chan、Junling Zhao
DOI:10.1021/acs.orglett.9b00821
日期:2019.5.17
trifluoromethyl ketones promoted by a spirocyclic phosphoric acid was developed. This strategy was applicable to various substituted trifluoromethyl ketones and 4-aminoindole derivatives, affording the corresponding C7-functionalized indole derivatives, bearing a pharmaceutically interesting trifluoromethylated tertiary alcohol scaffold, in 21%–98% yields with up to >99% enantiomeric excess (ee).
An entry to 2-(cyclobut-1-en-1-yl)-1<i>H</i>-indoles through a cyclobutenylation/deprotection cascade
作者:Philipp Natho、Zeyu Yang、Lewis A. T. Allen、Juliette Rey、Andrew J. P. White、Philip J. Parsons
DOI:10.1039/d1ob00430a
日期:——
A transition-metal-free methodology for the synthesis of 2-(cyclobut-1-en-1-yl)-1H-indoles through a cyclobutenylation/deprotection cascade was developed and the underlying mechanism was studied.
[EN] PROCESS FOR PREPARATION OF EFAVIRENZ BY CYCLISATION<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'ÉFAVIRENZ PAR CYCLISATION
申请人:LONZA AG
公开号:WO2012097510A1
公开(公告)日:2012-07-26
The invention disclosed a process for the preparation of the HIV drug Efavirenz, also known as DMP-266, starting from 1,4-dichlorobenzene, and its intermediates.
作者:A. S. Golubev、A. F. Shidlovskii、A. S. Peregudov、N. D. Kagramanov
DOI:10.1007/s11172-014-0733-1
日期:2014.10
A convenient synthetic method to access hitherto unknown 3-(trifluoromethyl)- and 3-(difluoromethyl)-2,1-benzisoxazoles by the reaction of sodium azide with 1-(2-halophenyl)-2,2,2-trifluoroethanones or 1-(2-halophenyl)-2,2-difluoroethanones was developed. 3-Fluoromethyl-2,1-benzisoxazoles are versatile precursors for o-fluoroacetylanilines.