Silver-Catalyzed Decarboxylative Allylation of Aliphatic Carboxylic Acids in Aqueous Solution
作者:Lei Cui、He Chen、Chao Liu、Chaozhong Li
DOI:10.1021/acs.orglett.6b00802
日期:2016.5.6
Direct decarboxylative radical allylation of aliphaticcarboxylicacids is described. With K2S2O8 as the oxidant and AgNO3 as the catalyst, the reactions of aliphaticcarboxylicacids with allyl sulfones in aqueous CH3CN solution gave the corresponding alkenes in satisfactory yields under mild conditions. This site-specific allylation method is applicable to all primary, secondary, and tertiary alkyl
描述了脂肪族羧酸的直接脱羧自由基烯丙基化。以K 2 S 2 O 8为氧化剂,AgNO 3为催化剂,脂肪族羧酸与烯丙基砜在CH 3 CN水溶液中的反应在温和条件下以令人满意的收率得到了相应的烯烃。此位点特定的烯丙基化方法适用于所有伯,仲和叔烷基酸,并具有广泛的官能团相容性。
Silver-Catalyzed Decarboxylative Alkynylation of Aliphatic Carboxylic Acids in Aqueous Solution
作者:Xuesong Liu、Zhentao Wang、Xiaomin Cheng、Chaozhong Li
DOI:10.1021/ja306638s
日期:2012.9.5
C(sp(3))-C(sp) bondformations are of immense interest in chemistry and material sciences. We report herein a convenient, radical-mediated and catalytic method for C(sp(3))-C(sp) cross-coupling. Thus, with AgNO(3) as the catalyst and K(2)S(2)O(8) as the oxidant, various aliphatic carboxylic acids underwent decarboxylative alkynylation with commercially available ethynylbenziodoxolones in aqueous solution
An object of the present invention is to provide a process for producing a dialkyl tin compound from a composition of deactivated forms of a dialkyl tin catalyst, and to provide a process for producing the dialkyl tin catalyst from the dialkyl tin compound and using the dialkyl tin catalyst to produce a carbonic acid ester. According to the present invention, a process for producing a dialkyl tin compound is provided that subjects a composition of the deactivated forms of the dialkyl tin catalyst, formed when producing an ester compound, to an alkyl group redistribution reaction and/or dealkylation reaction.
Orally Disintegrating Tablet Compositions Comprising Combinations of High and Low-Dose Drugs
申请人:Venkatesh Gopi
公开号:US20100330150A1
公开(公告)日:2010-12-30
The present invention is directed to pharmaceutical compositions comprising a plurality of taste-masked high-dose/low-dose drug-containing microparticles, dosage forms comprising such pharmaceutical compositions (such as an orally disintegrating tablet), and methods of making the pharmaceutical compositions and dosage forms of the present invention. Dosage forms comprising the pharmaceutical compositions of the present invention are improved homogeneous blends of high-dose and low-dose drugs which provide for more convenient and palatable administration of drug combinations, for example for treating pain, hyperglycemia, cardiovascular disease, and allergies.
Orally Disintegrating Tablet Compositions Comprising Combinations of Non-Opioid and Opioid Analgesics
申请人:Venkatesh Gopi
公开号:US20110003006A1
公开(公告)日:2011-01-06
The present invention is directed to pharmaceutical compositions comprising a plurality of taste-masked non-opioid analgesic/opioid analgesic drug-containing microparticles, dosage forms comprising such pharmaceutical compositions (such as an orally disintegrating tablet), and methods of making the pharmaceutical compositions and dosage forms of the present invention. Dosage forms comprising the pharmaceutical compositions of the present invention are improved homogeneous blends of non-opioid and opioid analgesics which provide for more convenient and palatable administration of drug combinations, for example for treating pain.