SIMPLE AND CHEMOSELECTIVE SYNTHESIS OF KETONES FROM CARBOXYLIC ACIDS AND GRIGNARD REAGENTS USING DICHLOROTRIPHENYLPHOSPHORANE
作者:Tamotsu Fujisawa、Sachio Iida、Hiroshi Uehara、Toshio Sato
DOI:10.1246/cl.1983.1267
日期:1983.8.5
Dichlorotriphenylphosphorane was found to be a good condensation reagent for synthesis of ketones from carboxylic acids and Grignardreagents under mild conditions. Synthetic utility of the present method is demonstrated by the chemoselective reaction of carboxylic acids possessing such a functional group as halogen, cyano, or carbonyl.
HIGHLY CHEMOSELECTIVE SYNTHESIS OF KETONES FROM CARBOXYLIC ACIDS AND GRIGNARD REAGENTS USING α-CHLOROENAMINES AS A CONDENSATION REAGENT
作者:Tamotsu Fujisawa、Toshiki Mori、Kazunobu Higuchi、Toshio Sato
DOI:10.1246/cl.1983.1791
日期:1983.11.5
α-Chloroenamines are found to be an effective condensation reagent of carboxylic acids and Grignardreagents under mild conditions to afford chemoselectively the corresponding ketones in high yields and in one-pot operation.
Method of regulating the growth of aquatic weeds with pyridine
申请人:Eli Lilly and Company
公开号:US04116665A1
公开(公告)日:1978-09-26
A method of regulating the growth of submerged and floating aquatic weeds which comprises adding a 3-substituted pyridinemethane, pyridinemethanol, or derivative thereof, to a body of water containing the submerged and floating aquatic weeds to be regulated, in quantities sufficient to regulate the growth of the said submerged and floating aquatic weeds. The disclosure also relates to novel compositions for carrying out the method.
Ims detection of chemical markers in petroleum products
申请人:Authentix, Inc.
公开号:EP2264130A2
公开(公告)日:2010-12-22
A method and composition for identifying chemically tagged petroleum products can be achieved by adding one or more chemicals to a selected petroleum product wherein the chemical is immune to extraction from the petroleum product by conventional inexpensive absorbents, cannot be removed by extraction with acids, bases, or immiscible solvents, cannot be easily oxidized, reduced or reacted with common agents, is difficult to disguise by masking with other agents, has a low polarity, and has a boiling pint in the range of the petroleum product the chemical is being added to. The presence of the chemical is determined by using ion mobility to spectroscopy.
IMS detection of chemical markers in petroleum products
申请人:——
公开号:US20040147413A1
公开(公告)日:2004-07-29
A method and composition for identifying chemically tagged petroleum products can be achieved by adding one or more chemicals to a selected petroleum product wherein the chemical is immune to extraction from the petroleum product by conventional inexpensive absorbents, cannot be removed by extraction with acids, bases, or immiscible solvents, cannot be easily oxidized, reduced or reacted with common agents, is difficult to disguise by masking with other agents, has a low polarity, and has a boiling point in the range of the petroleum product the chemical is being added to. The presence of the chemical is determined by using ion mobility spectroscopy.