[4 + 1] Annulation of in situ generated azoalkenes with amines: A powerful approach to access 1-substituted 1,2,3-triazoles
作者:Hongwei Wang、Yongquan Ning、Paramasivam Sivaguru、Giuseppe Zanoni、Xihe Bi
DOI:10.1016/j.cclet.2021.09.008
日期:2022.3
methods for their preparation mainly rely on thermal [3 + 2] cycloaddition of potentially dangerous acetylene and azides. Here we report a base-mediated [4 + 1] annulation of azoalkenes generated in situ from readily available difluoroacetaldehyde N-tosylhydrazones (DFHZ-Ts) with amines under relatively mild conditions. This azide- and acetylene-free strategy provides facile access to diverse 1-substituted
Vanilloids. 1. Analogs of capsaicin with antinociceptive and antiinflammatory activity
作者:John M. Janusz、Brian L. Buckwalter、Patricia A. Young、Thomas R. LaHann、Ralph W. Farmer、Gerald B. Kasting、Maurice E. Loomans、Gary A. Kerckaert、Cherie S. Maddin
DOI:10.1021/jm00070a002
日期:1993.9
As part of a program to establish structure-activityrelationships for vanilloids, analogs of the pungent principle capsaicin, the alkyl chain portion of the parent structure (and relatedcompounds derived from homovanillic acid) was varied. In antinociceptive and antiinflammatory assays (rat and mouse hot plate and croton oil-inflamed mouse ear), compounds with widely varying alkyl chain structures
PROCESS FOR PREPARING AMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION IN THE PRESENCE OF A COMPLEX CATALYST COMPRISING IRIDIUM AND AN AMINO ACID
申请人:BASF SE
公开号:US20140046054A1
公开(公告)日:2014-02-13
The invention relates to a process for preparing amines (A) by alcohol amination of alcohols (Al) by means of an aminating agent (Am) with elimination of water, wherein the alcohol amination is carried out in the presence of a complex catalyst comprising iridium and an amino acid.
PROCESS FOR FUNCTIONALIZATION OF UNSATURATED COMPOUNDS
申请人:Casciato Stefano
公开号:US20130211033A1
公开(公告)日:2013-08-15
The present invention relates to a process for synthesizing a multifunctional compound, including the reaction of a compound of formula (II) with atmospheric or molecular oxygen, in the presence of at least one aldehyde of formula (III), and optionally in the presence of at least one catalyst or at least one radical initiator; wherein: R
10
, R
20
, R
30
, R
40
, R
50
, L
2
, R
60
, R
7
, R
8
, and R
9
are as described in the claims. The invention also relates to the use of these compounds as monomers for the preparation of polyurethane. The invention also relates to the use of these compounds as monomers of polymers or of biopolymers.
The properties of biologically active compounds, for example drugs and agrochemicals, which contain in their molecular structure one or more functional groups selected from alcohol, ether, phenyl, amino, amido, thiol, carboxylic acid and carboxylic acid ester groups are modified by replacing one or more of these functional groups by a lipophilic group selected from those of the formula: RCOO—, RCONH—, RCOS—, RCH
2
O—, RCH
2
NH—, —COOCH
2
R, —CONHCH
2
R and —SCH
2
R, wherein R is a lipophilic moiety selected from cis-8-heptadecenyl, trans-8-heptadecenyl, cis-10-nonadecenyl and trans-10-nonadecenyl.