Synthesis of Chiral Heterocyclic <i>N</i>
-Haloamides and -imides and Their Applications as Halogenating Agents and Mechanistic Probes
作者:Ulrich Hennecke、Christian H. Müller、Constantin G. Daniliuc
DOI:10.1002/ejoc.201601159
日期:2017.1.18
reports of chiral derivatives of the most common of these reagents such as N-halosuccinimides. Herein, we report the synthesis of new chiral N-halogenated amides and imide derivatives, which are easily accessible from inexpensive starting materials of the chiral pool. These new chiral halogenating agents were then applied as stoichiometric reagents in haloetherification reactions and as mechanistic probes
(3R,4R)-3,4-diacetoxypyrrolidine-2,5-dione was prepared from L-tartaric acid by ring closure of the ammonium salt of (2R,3R)-2,3-diacetoxy-3-carbamoylpropanoic acid with thionylchloride. Mechanistic considerations indicate that the ring closure proceeds through two competing pathways: either direct ring closure of an intermediate acyl chloride or in a parallel route via a ketene intermediate. The cyclic
Synthesis of a building block for phosphonate analogues of moenomycin A12 from d-tartaric acid
作者:Jalal Zahra、Lothar Hennig、Matthias Findeisen、Sabine Giesa、Peter Welzel、Dietrich Müller、William S Sheldrick
DOI:10.1016/s0040-4020(01)00951-6
日期:2001.11
An approach for the synthesis of moenomycin A(12) C-glycoside partial structures is reported based on allyltin chemistry. (C) 2001 Elsevier Science Ltd. All rights reserved.
DENER, JEFFREY M.;HART, DAVID J.;RAMESH, SUBBAN, J. ORG. CHEM., 53,(1988) N6, C. 6022-6030
作者:DENER, JEFFREY M.、HART, DAVID J.、RAMESH, SUBBAN