Chloral Hydrate as a Water Carrier for the Efficient Deprotection of Acetals, Dithioacetals, and Tetrahydropyranyl Ethers in Organic Solvents
作者:Sosale Chandrasekhar、Annadka Shrinidhi
DOI:10.1080/00397911.2013.876652
日期:2014.7.3
Abstract The efficientdeprotection of several acetals, dithioacetals, and tetrahydropyranyl (THP) ethers under ambient conditions, using chloral hydrate in hexane, is described. Excellent yields were realized for a wide range of both aliphatic and aromatic substrates. The method is characterized by mild conditions (room temperatures or below), simple workup, and the ready availability of chloral hydrate
METHOD OF PRODUCING PYRONE AND PYRIDONE DERIVATIVES
申请人:Sumino Yukihito
公开号:US20120022251A1
公开(公告)日:2012-01-26
The present invention provides a pyrone derivative and a pyridone derivative, which are novel intermediates for synthesizing an anti-influenza drug, a method of producing the same, and a method of using the same.
Photosensitized hydrogenabstractionfrom 2-alkyl-1,3-dioxolanes by triplet benzophenone gives the corresponding 1,3-dioxolan-2-yl radicals and these are trapped by α,β-unsatured ketones yielding monoprotected 1,4-diketones. With open chain ketones (3-buten-2-one and 4-penten-3-one) the yields are low and competitive pathways in part consume the radicals. With cyclic enones however, yields are good
Compounds of the general formula wherein the substituents are as defined in claim (
1
), are useful as fungicides.
通式为(公式),其中取代基如权利要求(1)所定义的化合物,可用作杀真菌剂。
Use of low molecular weight acetal, alcohol, acylated alcohol and ester compounds to block or reduce odor of carboxylic acids
申请人:Senomyx, Inc.
公开号:US20030089885A1
公开(公告)日:2003-05-15
Low molecular weight acetal, alcohol, O-acylated alcohol and ester compounds are identified that block the odor of specific carboxylic acids especially propionic acid, butyric acid, isovaleric acid 3-methyl-2-hexenoic acid and hexanoic acid. These compounds exhibit surprisingly high odor blocking properties and are therefore useful additives to compositions such as: a) personal care products including underarm deodorant and antiperspirant, hair shampoo and conditioner, toilet soap, and skin lotion; b) fabric care products including laundry detergents, fabric conditioners, and fabric fresheners; c) pet care products including deodorant, shampoo, conditioner, and d) home care products including air fresheners, carpet fresheners, surface cleaners and hand wash dish detergent.