发明人: M Eh,Peter Wörner 被引量: 5 摘要: The present invention relates to novel macrocyclic compounds, and to their preparation and use in perfumes. Specifically, the present invention relates to novel 1,4-dioxacycloalkan-2ones and 1,4-dioxzcycloaken-2-ones.收藏...
1、常见化学毒物危害程度分级汇总表(供参考)厅P中义名英义名化学文摘号(CAS NO.1)毒物危害指数职业危害程度分级1乂乂Antu86-88-4THI=49中度危害(III级)2氨Ammonia7664-41-7THI=51高度危害(n级)32-氨基叱噬2-Amminopyridine504-29-0THI=44中度危害(iii级)4氨基俄酸俊Ammonium sulfamate7773-06-0THI=17...
One-pot stereoselective synthesis of dimethy (2-hydroxy-4,4- dimethylcyclohex-1-en-6-one-1-yl)-3-(diphenylphosphonato)butanedioate. Phosphorus, Sulfur... I Yavari,A Ramazani - 《Phosphorus & Sulfur & the Related Elements》 被引量: 47发表: 1997年 Synthesis of novel 2,5-diarylselenophe...
The 1,4-dihydropyridine (DHP) class of calcium channel blockers are widely utilized in the treatment of car- diovascular diseases such as hypertension, angina pectoris, and other spastic smooth muscle disorders1. The SAR of calcium channel blockers signifies the presence of ester linkage and ...
55 a new method for the synthesis of some β-diketones with a chiral substituent in R1 is based on the reaction of 2,2,6-trimethyl-4H-1,3-dioxin-4-one (diketene acetone adduct) with appropriate nucleophiles as (d )-menthol, (4S)-benzyloxazolidin-2-one or (2R)-bornane-10,2-su...
Novel 1,4-dioxenes are regio- and stereoselectively obtained from the reaction of epoxides with α-diazo-β-keto esters catalyzed by a combination of 1,10-phenanthroline and [CpRu(CH3CN)3][BArF] (Scheme 84) (14AGE6140). Sign in to download full-size image Scheme 84. Examples of 1,...
Status Microsoft je potvrdio da je ovo problem u Microsoft proizvodima koji su navedeni u odeljku "Odnosi se na".
Of these, cis-1,4-diphenylcyclohexane-1,4-diol (4) showed very high inclusion ability for alcohols and phenols, although its trans-isomer (3) showed none. By applying the selective inclusion complexation behaviour of 4, separation of isomers was accomplished. Rac-exo, exo-2,5-diphenylnor...
Crystal structure of 5-(3'-acetoxypropyl)-4-iodo-7-methoxy-2-phenyl-benzo[b]furan, C20H19IO4 Crystal structure of ethyl 3,3-dimethyl-5,7-dihydro-H[1,3]dioxepino-[5,6-c]-pyrrole-6-carboxylate,C12 H17NO4 Crystal structure of tricarbonyl[η6-(methyl 2-oxo-1-phenyl-cyclohepta-ne...
basement membuane basement soil base metabolism basendite baseofskull base of tignum base pair bp base pairing in dna base pairing rules base peak base ratio base replacement bases base soluble base stacking base su titution base transition base transporthfficie base transversion basibranchial basi...