undergo the Prins reaction with aldehydes in situ to afford conjugated homoallylic alcohols. These sequential transformations enable the conversion of diastereomeric mixtures of 3-hydroxy-4-pentenoic acids, which are readily prepared from the simple crossed aldol reaction of esters and α,β-unsaturatedaldehydes, into 3,5-hexadienyl alcohols with high regio- and stereoselectivities in a single manipulation
Regioselective Functionalization of Ester-, Amide-, Carbonate-, and Carbamate-Substituted 2-Phenyl-2-oxazolines with Mixed Lithium–Magnesium Amides
作者:Leandro A. Bozzini、Thiago dos Santos、Valter E. Murie、Murilo B. M. de Mello、Ricardo Vessecchi、Giuliano C. Clososki
DOI:10.1021/acs.joc.0c02369
日期:2021.1.1
highly functionalized benzenederivatives by regioselective metalation of ester-, amide-, carbamate-, and carbonate-substituted 2-phenyl-2-oxazolines with mixed lithium–magnesium amides followed by reaction with different electrophiles. While a complementary metalation site can be accessed by using different bases, steric and electronic effects promoted by the aromatic ring substituents also play an important
我们通过将酯,酰胺,氨基甲酸酯和碳酸盐取代的2-苯基-2-恶唑啉与锂-镁酰胺混合体进行区域选择性金属化,然后与不同的亲电试剂反应,制备了新型的高度官能化的苯衍生物。尽管可以通过使用不同的碱基来访问互补的金属化位点,但由芳环取代基促进的空间和电子效应在反应区域选择性中也起着重要作用。芳香族氢p K a值的计算计算已帮助我们通过络合物诱导的邻近效应概念使金属化偏好合理化。
Enantioselective C−H Olefination of α-Hydroxy and α-Amino Phenylacetic Acids by Kinetic Resolution
作者:Kai-Jiong Xiao、Ling Chu、Jin-Quan Yu
DOI:10.1002/anie.201510808
日期:2016.2.18
development of enantioselective C−H activation reactions by desymmetrization. However, the requirement for the presence of two chemically identical prochiral C−H bonds represents an inherent limitation in scope. Reported is the first example of kinetic resolution by a palladium(II)‐catalyzed enantioselective C−H activation and C−C bond formation, thus significantly expanding the scope of enantioselective C−H
Combined Cyanoborylation, C–H Activation Strategy for Styrene Functionalization
作者:Annabel Q. Ansel、John Montgomery
DOI:10.1021/acs.orglett.0c03138
日期:2020.11.6
A one-pot multicomponent copper-catalyzed protocol for borylation/ortho-cyanation of styrene derivatives followed by a Suzuki–Miyaura coupling provides a platform to explore the factors that control the selectivity between distal or proximal functionalization of arenes. The development of divergent nitrile-directed C–H functionalization (acetoxylation, pivalation, and methoxylation) offers an effective
[EN] ETHER BENZYLIDENE PIPERIDINE 5-MEMBERED ARYL CARBOXAMIDE COMPOUNDS USEFUL AS FAAH INHIBITORS<br/>[FR] COMPOSÉS D'ÉTHER-BENZYLIDÈNE-PIPÉRIDINE-ARYL À 5 CHAÎNONS-CARBOXAMIDE UTILES COMME INHIBITEURS DE FAAH
申请人:PFIZER
公开号:WO2009127943A1
公开(公告)日:2009-10-22
The present invention relates to compounds of the Formula (I), and pharmaceutically acceptable salts thereof, and their use in the treatment of FAAH-mediated diseases or condition.