Synthesis of unsaturated hydroxy acids by the cobalt carbonyl and phase transfer catalyzed carbonylation of vinyl epoxides
作者:Howard Alper、Serge Calet
DOI:10.1016/s0040-4039(00)82036-5
日期:1988.1
Phase transfer catalyzedreaction of vinyl epoxides with carbonmonoxide, methyl iodide, catalytic amounts of cobaltcarbonyl and TDA-1, affords β-hydroxy acids. High regioselectivity was observed in some cases.
Pharmaceutical compositions and methods of inhibiting angiogenesis using NAALADase inhibitors
申请人:——
公开号:US20030064912A1
公开(公告)日:2003-04-03
The present disclosure relates to a method of inhibiting angiogenesis comprising administering a N-Acetylated &agr;-Linked Acidic Dipeptidase (NAALADase) inhibitor to a patient in need thereof, and a pharmaceutical composition comprising an anti-angiogenic effective amount of a NAALADase inhibitor and a pharmaceutically acceptable carrier.
PHOTO-CURING MATERIAL MANUFACTURING METHOD, AND PHOTO-CURING MATERIAL AND ARTICLE
申请人:Asahi Glass Company Limited
公开号:EP2360195A1
公开(公告)日:2011-08-24
To provide a photocurable material which can form a cured product having a high transparency and a high refractive index, a process for producing the material easily, and an article having a high transparency and a high refractive index.
The photocurable material is obtained by a production process comprising (i) a step of reacting a polymerizable component (A) comprised of at least one type of a compound (a) having a (meth)acryloyloxy group, and a compound (B) having a mercapto group and a carboxy group to obtain a surface modifier (C) which has the carboxy group derived from the compound (B) at a terminal, (ii) a step of modifying the surface of inorganic fine particles (D) with the surface modifier (C) to obtain surface-modified inorganic fine particles (E), and (iii) a step of obtaining a photocurable material which contains the surface-modified inorganic fine particles (E), a polymerizable component (F) comprised of at least one type of a compound (f) having a (meth)acryloyloxy group, and a photopolymerization initiator (G).
Both the alpha-protons and carbons of beta-propiothiolactones exhibit atypical downfield chemical shifts. The alpha-protons of beta-propiothioiactones with no heteroatom at the alpha-position appear at 3.53-5.35 ppm, whereas the alpha-carbons appear at 56.9-86.2 ppm. The major cause of the unexpected deshielding effect was rationalized by assuming a through-space interaction between the occupied orbital of the alpha-carbon and the vacant orbital of sulfur, Copyright (C) 2000 John Wiley & Sons, Ltd.
Cignarella,G. et al., Farmaco, Edizione Scientifica, 1963, vol. 18, p. 907 - 919