The reduction of acyl chlorides by zerovalent zinc dust is described. The reaction gives enol esters of (Z) configuration in high yields. The initial product is presumed to be an acyl zinc species, which gives the enol ester in a stereospecific manner by a 1,2-hydrogen shift on the carbene intermediate.
New versatile approach to α-hydrazonoesters and amino acid derivatives through a modified Japp–Klingemann reaction
作者:V. Atlan、L. El Kaim、C. Supiot
DOI:10.1039/b003361h
日期:——
Addition of diazonium tetrafluoroborates to an acyl chloride
pyridine mixture affords hydrazonoacid derivatives in smooth conditions;
this new JappâKlingemann reaction emphasizes the synthetic potential
of electrophilic addition to ketenes.
Synthesis of supramolecular precision polymers: Crystallization under conformational constraints
作者:Sophie Reimann、Varun Danke、Mario Beiner、Wolfgang H. Binder
DOI:10.1002/pola.28759
日期:2017.11.15
precision polymers is an important strategy to systematically study structure formation in self‐assembly, particularly in the semicrystalline state. To this purpose, a series of precision polymers bearing either a N‐protected or N‐unprotected diaminopyridine (DAP) unit after every 16th, 18th, and 20th carbon as well as a urea unit after every 20th carbon along a polyethylene‐like polymer were synthesized
Method for treating surface of resin material layer and resin material
申请人:MITSUBISHI HEAVY INDUSTRIES, LTD.
公开号:US11111348B2
公开(公告)日:2021-09-07
A method is for treating a surface of a resin material layer. The method includes a first step of introducing as a substituent at least one selected from the group consisting of an acid halide and an alkyl halide into an aromatic polyether-based resin included in the resin material layer by Friedel-Crafts reaction.