Copper‐Catalyzed Amidation of Primary and Secondary Alkyl Boronic Esters
作者:Luis M. Mori‐Quiroz、Kirk W. Shimkin、Sina Rezazadeh、Ryan A. Kozlowski、Donald A. Watson
DOI:10.1002/chem.201603677
日期:2016.10.24
The oxidative copper‐catalyzed cross‐coupling of functionalized alkyl boronic esters with primary amides is reported. Through the identification of appropriate diketimine ligands, conditions for efficient coupling of both primary and secondaryalkyl boronic esters with diverse primary amides, including acetamide, have been developed.
Rhodium(I)-catalyzed hydroboration of olefins. The documentation of regio- and stereochemical control in cyclic and acyclic systems
作者:David A. Evans、Gregory C. Fu、Amir H. Hoveyda
DOI:10.1021/ja00228a068
日期:1988.9
Catalyse par les complexes Rh(PPh 3 ) 3 Cl et [Rh(nbd)(diphos-4)]BF 4 (nbd=norbornadiene, diphos-4=bis-diphenylphosphino-1,4 butane)
催化复合物 Rh(PPh 3 ) 3 Cl et [Rh(nbd)(diphos-4)]BF 4 (nbd=降冰片二烯,diphos-4=双-二苯基膦基-1,4丁烷)
Rhodium(I)- and iridium(I)-catalyzed hydroboration reactions: scope and synthetic applications
作者:David A. Evans、Gregory C. Fu、Amir H. Hoveyda
DOI:10.1021/ja00043a009
日期:1992.8
A study of the rhodium(1)- and iridium(1)-catalyzed hydroboration of olefins with catecholborane is described. Applications to organic synthesis were one focus of this investigation. The scope of the reaction was defined, and issues of stereoselection were addressed. The rhodium-catalyzedhydroboration of several classes of allylic alcohols was found to be highly diastereoselective, preferentially
作者:J.B. Sweeney、Alan F. Haughan、J.R. Knight、Smita Thobhani
DOI:10.1016/j.tet.2006.12.035
日期:2007.3
In contrast to the corresponding hydroxyiodination reactions, the reaction of acetoxycyclohex-2-ene 1 with N-PSP in the presence of water shows little regiocontrol, but is highly diastereoselective. However, the same reaction of the (R)-phenylglycinate derivative of (±)-cyclohexen-3-ol is highly diastereoselective, and regioselective. A hydrogen-bonding interaction is proposed to rationalize these
Diastereospecific hydroxyselenation of cyclohex-2-enyl phenylglycinates
作者:Alan F. Haughan、J.B. Sweeney
DOI:10.1016/s0957-4166(00)86166-2
日期:1994.1
Cyclohex-2-enyl esters of homochiral (R)-Z-phenylglycine undergo completely regio- and diastereospecific addition reactions with N-phenylselenophthalimide. The resulting selenoalcohols are separable by routine chromatography and may be converted into homochiral 1,3-cyclohexonediols in which the hydroxyl groups are differentiated.