- Mild debenzylation of aryl benzyl ether with BCl3 in the presence of pentamethylbenzene as a non-lewis-basic cation scavenger
-
Scope and limitations of the debenzylation conditions for aryl benzyl ether, which was developed during our synthetic studies on yatakemycin, were investigated. The chemoselective debenzylation proceeds at low temperature with a combination of BCl3 and pentamethylbenzene as a cation scavenger in the presence of various functional groups.
- Okano, Kentaro,Okuyama, Kei-Ichiro,Fukuyama, Tohru,Tokuyama, Hidetoshi
-
scheme or table
p. 1977 - 1980
(2009/04/07)
-
- NOVEL COMPOUNDS AND THEIR USE IN MEDICINE, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
-
The present invention relates to novel compounds of formula (I) and their pharmaceutically acceptable salts thereof, pharmaceutical compositions containing them. The present invention also relates to a process for the preparation of the above said novel compounds.
- -
-
Page/Page column 54-55
(2010/02/11)
-
- O,S-dialkyl O-sulfonyloxy-phenyl phosphorothiolates and phosphorodithioates
-
This invention relates to novel organophosphorothiolates and phosphorodithioates of the formula: SPC1 Wherein R is a (C1 -C4) alkyl group; R' is a (C3 -C6) alkyl group; Y is an oxygen atom or sulfur atom; X is a halogen atom, a (C1 -C5) alkyl group, or a (C1 -C5) alkoxy group; m is an integer from 0 to 3; and A is A. a (C1 -C5) alkyl group optionally substituted with up to three halogen atoms; B. a (C5 -C6) cycloalkyl group; C. a (C7 -C10) aralkyl group, the aryl portion of which is optionally substituted with up to three halogen atoms, nitro groups, (C1 -C5) alkyl groups, or (C1 -C5) alkoxy groups; or D. an aryl group of the formula: SPC2 Wherein X is a halogen atom, a nitro group, A (C1 -C5) alkyl group, or a (C1 -C5) alkoxy group; and m' is an integer from 0 to 3; To compositions containing them and to methods of using them to control pests.
- -
-
-