Catalytic Radical Cation Salt Induced Csp3–H Functionalization of Glycine Derivatives: Synthesis of Substituted Quinolines
摘要:
A domino C-sp3-H functionalization of glycine derivatives was achieved under catalytic radical cation salt induced conditions, producing a series of quinolines. The proposed mechanism shows that a peroxyl radical cation, which is generated by the coupling between O-2 and TBPA(+center dot), might be involved to initiate the catalytic oxidation.
Catalytic Radical Cation Salt Induced Csp3–H Functionalization of Glycine Derivatives: Synthesis of Substituted Quinolines
摘要:
A domino C-sp3-H functionalization of glycine derivatives was achieved under catalytic radical cation salt induced conditions, producing a series of quinolines. The proposed mechanism shows that a peroxyl radical cation, which is generated by the coupling between O-2 and TBPA(+center dot), might be involved to initiate the catalytic oxidation.
Enantioselective Allylic Thioetherification: The Effect of Phosphoric Acid Diester on Iridium‐Catalyzed Enantioconvergent Transformations
作者:Markus Roggen、Erick M. Carreira
DOI:10.1002/anie.201202092
日期:2012.8.20
You'll take the high road and I'll take the low road: Enantioenriched allylic thioethers have been synthesized from chiral racemic allylic alcohols. The combination of an Ir–(P,alkene) complex and dibutyl phosphoricacid are required to attain high selectivities. Mechanistic studies uncover an enantioconvergenttransformation in which substrate enantiomers react along different pathways to give the
B12 mimicry in a weak ligand environment: oxidation and alkylation of thiols
作者:Shantanu Chowdhury、Purnima M. Samuel、Indira Das、Sujit Roy
DOI:10.1039/c39940001993
日期:——
The first examples of alkylation and oxidation of thiols by cobalt in weakly coordinating ligand (MeCN) environment is presented as a mimic to B12-dependent nonenzymatic reaction.
Process for the preparation of alkenyl esters of acemetacin
申请人:Bayer Aktiengesellschaft
公开号:US04658039A1
公开(公告)日:1987-04-14
The new indole derivatives of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote hydrogen or lower alkyl, R.sup.3 denotes hydrogen, lower alkyl or halogen and R.sup.4 and R.sup.5 are identical or different and denote hydrogen, lower alkyl or optionally substituted aryl, and R.sup.4 and R.sup.5 can also represent lower alkenyl, and wherein R.sup.2 and R.sup.5 can be linked by an alkylene bridge of the formula --CH.sub.2 --CH.sub.2 --CH.sub.2).sub.n in which n represents the number 0 or 1, can be prepared by reacting an ammonium or phosphonium salt of the corresponding indolecarboxylic acid with a haloacetic acid allyl ester. The new compounds can be used to prepare acemetacin. The new indole derivatives possess a pharmacological action.
The present invention relates to norbormide analogues having rodenticidal activity; rodenticidal compositions comprising the analogues; uses of the analogues as rodenticides; uses of the analogues in the manufacture of rodenticidal compositions; and methods for controlling rodents using the compositions.
The present invention relates to norbormide analogs having rodenticidal activity; rodenticidal compositions comprising the analogs; uses of the analogs as rodenticides; uses of the analogs in the manufacture of rodenticidal compositions; and methods for controlling rodents using the compositions.