Base-Induced Radical Carboamination of Nonactivated Alkenes with Aryldiazonium Salts
作者:Stephanie Kindt、Karina Wicht、Markus R. Heinrich
DOI:10.1021/acs.orglett.5b03143
日期:2015.12.18
transition-metal-free version of the Meerweinarylation has been developed. The key feature of this carboamination-type reaction is the slow base-controlled generation of arylradicalsfrom aryldiazonium tetrafluoroborates, so that a sufficient quantity of diazonium ions remains to enable efficient trapping of the alkyl radical adduct resulting fromarylradical addition to the alkene. Under strongly
BiCl<sub>3</sub>-Facilitated removal of methoxymethyl-ether/ester derivatives and DFT study of –O–C–O– bond cleavage
作者:Angela Pacherille、Beza Tuga、Dhanashree Hallooman、Isaac Dos Reis、Mélodie Vermette、Bilkiss B. Issack、Lydia Rhyman、Ponnadurai Ramasami、Rajesh Sunasee
DOI:10.1039/d1nj00449b
日期:——
simple method for the cleavage of methoxymethyl (MOM)-ether and ester derivatives using bismuth trichloride (BiCl3) is described. The alkyl, alkenyl, alkynyl, benzyl and anthracene MOM ether derivatives, as well as MOM esters of both aliphatic and aromatic carboxylic acids, were deprotected in good yields. To better understand the molecular roles of BiCl3 and water for MOM cleavage, two possible binding
Pyridine-facilitated phenylselenoetherification of some tertiary alkenols
作者:Biljana M. Mojsilovic、Zorica M. Bugaric
DOI:10.1002/hc.1072
日期:——
An improved procedure for intramolecular cyclization of tertiaryalkenols using benzeneselenyl halides has been developed. We found that cyclization can be facilitated by pyridine. Thus, in the presence of an equimolar amount of pyridine, a chemospecific reaction could be observed that resulted in formation of corresponding cyclic ethers, and quantitative yields were achieved instantaneously under
作者:Zorica M. Bugarčić、Biljana Mojsilović、Ljiljana Marjanović、Stanimir Konstantinović
DOI:10.1007/s007060070042
日期:2000.10.16
The reaction of somealkenols with tetrachloromethane in the presence of a radical initiator was investigated. Regarding the effects of structural features of the starting alkenol (number and position of methyl substituents at the double bond and at the carbinol carbon atom, constitutional relationship between the double bond and the hydroxyl group) there are two possible competing reactions: addition
Palladium-catalyzed remote arylative substitution was achieved for the reaction of arylboronic acids with alkenes possessing a distant acetoxy group via nondissociative chain walking and β-acetoxy elimination.