26928-14-3Relevant articles and documents
CARBOLINE ANTIPARASITICS
-
Page/Page column 45-46, (2017/01/09)
The present invention provides Formula (1 ) compounds that are gamma-carbolines, Formula (1) wherein R1 a, R1 b, R1 c, R1d, R2, R3, and "— " are as defined herein; veterinary acceptable salts thereof, and stereoisomers thereof, which act as parasiticides,
P[N(i-Bu)CH2CH2]3N: Nonionic Lewis base for promoting the room-temperature synthesis of α,β-unsaturated esters, fluorides, ketones, and nitriles using Wadsworth - Emmons phosphonates
Chintareddy, Venkat Reddy,Ellern, Arkady,Verkade, John G.
supporting information; experimental part, p. 7166 - 7174 (2010/12/25)
The bicyclic triaminophosphine P(RNCH2CH2) 3N (R = i-Bu, 1c) serves as an effective promoter for the room-temperature stereoselective synthesis of α,β-unsaturated esters, fluorides, and nitriles from a wide array of aromatic, aliphatic, heterocyclic, and cyclic aldehydes and ketones, using a range of Wadsworth-Emmons (WE) phosphonates. Among the analogues of 1c [R = Me (1a), i-Pr (1b), Bn (1d)], 1a and 1b performed well, although longer reaction times were involved, and 1d led to poorer yields than 1c. Functionalities such as cyano, chloro, bromo, methoxy, amino, ester, and nitro were well tolerated. We were able to isolate and characterize (by X-ray means; see above) the reactive WE intermediate species formed from 2b and 1c.
Microwave-assisted one-pot synthesis of α-fluoro-α,β- unsaturated esters under solvent-free conditions
Ren, Aishan,Yang, Xiongjun,Hong, Jing,Yu, Xiaochun
experimental part, p. 2376 - 2378 (2009/05/27)
A microwave-assisted approach for the synthesis of α-fluoro-α, β-unsaturated esters from ethyl bromofluoroacetate, aldehydes, and triphenylphosphine in the presence of Zn-Cu under solvent-free conditions was achieved. The reaction was accomplished within