From Umpolung to Alternation: Modified Reactivity of Donor-Acceptor Cyclopropanes Towards Nucleophiles in Reaction with Nitroalkanes
作者:Ekaterina M. Budynina、Konstantin L. Ivanov、Alexey O. Chagarovskiy、Victor B. Rybakov、Igor V. Trushkov、Mikhail Ya. Melnikov
DOI:10.1002/chem.201504593
日期:2016.3.7
A conceptually newtype of donor–acceptorcyclopropanereactivity towards nucleophiles has been disclosed. An essential characteristic of the process is an unusual nucleophilic attack on the C(3)‐position of a cyclopropane, combined with typical small ring‐opening by cleavage of the C(1)−C(2) bond between the acceptor and the donor. Based on this new reaction between cyclopropane‐1,1‐diesters and nitroalkanes
The present invention has its object to provide a thermoplastic resin for producing moldings having enough transparency and excellent in permanent antistatic properties and mechanical properties. The present invention provides a transparent resin composition which comprises at least one block polymer (A) selected from the group consisting of specific block polymers (A1) and (A2) and a transparent resin (B), with the difference in refractive index between (A) and (B) being not more than 0.01.
The present invention has its object to provide a thermoplastic resin for producing moldings having enough transparency and excellent in permanent antistatic properties and mechanical properties.
The present invention provides a transparent resin composition which comprises at least one block polymer (A) selected from the group consisting of specific block polymers (A1) and (A2) and a transparent resin (B), with the difference in refractive index between (A) and (B) being not more than 0.01.
Polyol component for polyurethane formation comprising anionic diol and composition
申请人:Ishida Hirotaka
公开号:US20060182922A1
公开(公告)日:2006-08-17
The present invention provides a polyol component for polyurethane formation comprising an anionic diol (A1); and an anionic diol composition comprising said diol (A1), another active hydrogen atom-containing compound (A2), and/or a compounding ingredient (A3) selected from the group consisting of inert solvents (A31) and additives (A32), with the content of (A2) being not higher than 85 mole % based on the total number of moles of (A1) and (A2).