N-Alkoxymethylation of heterocyclic compounds with diethyl phosphite via cleavage of P–O bond
作者:Zheng-Jun Quan、Rong-Guo Ren、Xiao-Dong Jia、Yu-Xia Da、Zhang Zhang、Xi-Cun Wang
DOI:10.1016/j.tet.2011.01.061
日期:2011.4
N-Alkoxymethylation of heterocycliccompounds with diethyl phosphite via cleavage of P–O bond was investigated and a series of N3-ethoxymethylated heterocycliccompounds were synthesized. A mechanism in which diethyl phosphite acts as an efficient surrogate of ethanol was proposed and supported by several evidences.
A general synthesis of 1-(1-alkenyl)benzotriazoles
作者:David P.M Pleynet、Jonathan K Dutton、A Peter Johnson
DOI:10.1016/s0040-4020(99)00690-0
日期:1999.10
1-Methyl, 1-(alkoxymethyl) and 1-(trimethylsilylmethyl)benzotriazoles are metallated at the alpha-carbon. Trapping of the resulting metallated species with chlorotrimethylsilane gives compounds which undergo Peterson olefination even with hindered ketones. In some cases, metallation at the 4-position of the benzotriazole is observed. An exhaustive metallation/silylation sequence gives 4-trimethylsilyl substituted 1-benzotriazoles in good yields. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
KATRITZKY A. R.; RACHWAL S.; CASTER K. C.; MAHNI F. (IN PART); LAW KAM WA+, J. CHEM. SOC. PERKIN TRANS.,(1987) N 4, 781-789
作者:KATRITZKY A. R.、 RACHWAL S.、 CASTER K. C.、 MAHNI F. (IN PART)、 LAW KAM WA+