Process and catalyst for the preparation of acetylpyridines
申请人:Chuck John Roderick
公开号:US20060240978A1
公开(公告)日:2006-10-26
A process for the production of acetylpyridines of the formula (1):
by reacting a pyridinecarboxylic ester of the formula (II):
wherein R
1
is C
1-6
-alkyl, with acetic acid in the gas phase in the presence of a catalyst. The active material of the catalyst is titanium dioxide and at least one alkali or alkaline earth metal oxide, and it is supported on an alumina-silica support having an apparent porosity of at least 50 percent. The process has the advantage of producing only small amounts of by-products (e.g., pyidine).
[EN] MODIFIED NICOTINIC COMPOUNDS AND RELATED METHODS<br/>[FR] COMPOSÉS NICOTINIQUES MODIFIÉS ET PROCÉDÉS ASSOCIÉS
申请人:SELECTA BIOSCIENCES INC
公开号:WO2012061717A1
公开(公告)日:2012-05-10
Provided herein are compounds and related composition and methods that may be raise an antibody response to nicotinic compounds, in some embodiments.
Nicotine chemistry
作者:Jeffrey I. Seeman、Charles G. Chavdarian、Richard A. Kornfeld、John D. Naworal
DOI:10.1016/s0040-4020(01)96505-6
日期:1985.1
Organolithiumreagents (RLi; where R = ethyl, isopropyl,cyclopropyl,n-butyl, sec-butyl, t-butyl, vinyl) have been found to add regiospecifically to (—)-nicotine to provide a series of 6-substituted nicotinoids of low optical activity. The data presented for the organolithiumadditions coupled with an analysis of the addition oft-BuLi to(—)-nicotine and [2'-2H]nicotine have provided strong evidence