Reaction of phenylcarbene formed from benzaldehyde tosylhydrazone in certain solvents
作者:H. Nozaki、R. Noyori、K. Sisido
DOI:10.1016/s0040-4020(01)98979-3
日期:1964.1
tosylhydrazone (I) with sodium methoxide in various solvents under irradiation and/or heating yields products arising fromphenylcarbene (IV) which is produced by photolytic or pyrolytic decomposition of initially formed phenyldiazomethane (III). Reaction products originating solely from the tosylhydrazone (I) are (VI ∼ XI) while those produced by the interaction with solvents are formulated as addition
Easily Accessible and Highly Tunable Bisphosphine Ligands for Asymmetric Hydroformylation of Terminal and Internal Alkenes
作者:Kun Xu、Xin Zheng、Zhiyong Wang、Xumu Zhang
DOI:10.1002/chem.201304684
日期:2014.4.7
An efficient methodology for synthesizing a small library of easily tunable and sterically bulky ligands for asymmetric hydroformylation (AHF) has been reported. Five groups of alkene substrates have been tested with excellent conversions, moderate‐to‐excellent regio‐ and enantioselectivities. Among the best result of the reported literature, application of ligand 1 c in the highly selective AHF of
Microwave-assisted synthesis of 1-hydrazinophosphonates via the reaction of aldazines with dialkyl phosphite
作者:Babak Kaboudin、Soheil Alipour
DOI:10.1002/hc.21019
日期:——
A simple, efficient, and novel method has been developed for the synthesis of 1-hydrazinophosphonic acids from aldazines. As described below, treatment of aldazines with diethyl phosphite gives the corresponding 1-hydrazinophosphonic acids in good yields. The reaction proceeds under microwave irradiation at 110°C and neutral condition without any additives such as base, acid, or catalyst. This method
The catalytic olefination reaction of aldehydes and ketones with CBr3CF3
作者:Valentine G. Nenajdenko、Georgy N. Varseev、Alexey V. Shastin、Elisabeth S. Balenkova
DOI:10.1016/j.jfluchem.2005.03.020
日期:2005.6
The new approach of catalytic olefination reaction (COR) has been used to convert aromatic and aliphaticaldehydes and ketones to 2-bromo-3,3,3-trifluoroprop-1-enes by the treatment of corresponding hydrazones with CBr3CF3 under copper(I) catalysis conditions. The reaction proceeds stereoselectively, the target alkenes were obtained in good yields.
Oxidized multiwalled nanotubes as efficient carbocatalyst for the general synthesis of azines
作者:Miguel A. Valle-Amores、Matías Blanco、Stefano Agnoli、Alberto Fraile、José Alemán
DOI:10.1016/j.jcat.2022.01.009
日期:2022.2
allows the synthesis of azines with application in nonlinear optics, and the organic materials and biological active compounds crafting. oxMWNT catalysed the reaction in just 3 h with full recyclability upon the recovery of the catalyst. In addition, due to the inherent oxMWNT oxidative capacity in the presence of nitric acid, we have also developed the one-potsynthesis of azines starting from alcohols