Synthesis of α‐Branched Enones via Chloroacylation of Terminal Alkenes
作者:Jungwon Kim、Sven Müller、Tobias Ritter
DOI:10.1002/anie.202309498
日期:2023.12.4
show the conversion of unactivated alkenes into α-branched α,β-unsaturated ketones (enones) and esters. Regioselective chloroacylation with acyl chlorides and chloroformates takes place under cooperative nickel/photoredox catalysis. Subsequent HCl elimination provides enones and α,β-unsaturated esters that are not accessible via the conventional acylation approaches that provide the other, linear constitutional
A halogenated resin composition whose heat stability, weatherability, initial coloration, thermal coloration and adhesiveness are improved by adding thereto an overbased alkaline earth metal carboxylate/carbonate together with a β-diketone compound or a metal salt thereof.
FILM FOR FOOD PACKAGING, STRETCH FILM FOR FOOD PACKAGING, FILM FOR AUTOMATIC PACKAGING MACHINE FOR FOOD PACKAGING, AND METHOD FOR PACKAGING FOOD
申请人:Mitsubishi Chemical Corporation
公开号:US20210086969A1
公开(公告)日:2021-03-25
A film for food packaging includes a resin composition comprising a vinyl chloride-based resin (A); a plasticizer (B); and an anti-fogging agent (C), wherein the composition comprises 1.5 parts by mass to 4.0 parts by mass of a diglycerin ester, 0.1 part by mass to 1.5 parts by mass of a glycerin monoester, and 0.1 part by mass to 3.0 parts by mass of an ethylene oxide adduct as the anti-fogging agent (C) relative to 100 parts by mass of the vinyl chloride-based resin (A).
US5147917A
申请人:——
公开号:US5147917A
公开(公告)日:1992-09-15
<i>B</i>-Alkylcatecholborane-Mediated Tandem Radical Conjugated Addition−Aldol Cyclization
A one-pot procedure involving radical conjugate addition of B-alkylcatecholboranes to enones followed by intramolecular aldol reaction is reported. Application to the stereoselective synthesis of monocyclic and bicyclic products with up to four contiguous stereogenic centers is presented.