Vinyl Carbocations Generated under Basic Conditions and Their Intramolecular C–H Insertion Reactions
作者:Benjamin Wigman、Stasik Popov、Alex L. Bagdasarian、Brian Shao、Tyler R. Benton、Chloé G. Williams、Steven P. Fisher、Vincent Lavallo、K. N. Houk、Hosea M. Nelson
DOI:10.1021/jacs.9b02110
日期:2019.6.12
Here we report the surprising discovery that high-energy vinyl carbocations can be generated under strongly basicconditions, and that they engage in intramolecular sp3 C-H insertion reactions through the catalysis of weakly coordinating anion salts. This approach relies on the unconventional combination of lithium hexamethyldisilazide base and the commercially available catalyst, triphenylmethylium
POLYVINYL ALCOHOL RESIN COMPOSITION AND MULTILAYER PACKAGES
申请人:Kuraray Co., Ltd.
公开号:EP1316582A1
公开(公告)日:2003-06-04
The present invention provides a resin composition having an oxygen scavenging function. The resin composition comprises 70 to 99.9 wt% of a polyvinyl alcohol resin (A) and 0.1 to 30 wt% of a thermoplastic resin (B) other than the polyvinyl alcohol resin (A), wherein the thermoplastic resin (B) has a carbon-carbon double bond and a functional group including a hetero atom, and an oxygen absorption rate of the resin composition is 0.001 ml/m2 • day or more.
Polyvinyl alcohol resin composition and multilayer packages
申请人:——
公开号:US20030022974A1
公开(公告)日:2003-01-30
The present invention provides a resin composition having an oxygen scavenging function. The resin composition comprises 70 to 99.9 wt % of a polyvinyl alcohol resin (A) and 0.1 to 30 wt % of a thermoplastic resin (B) other than the polyvinyl alcohol resin (A), wherein the thermoplastic resin (B) has a carbon-carbon double bond and a functional group including a hetero atom, and an oxygen absorption rate of the resin composition is 0.001 m//m
2
day or more.