Synthesis of -Nitro--diazocarbonyl Derivatives and Their Applications in the Cyclopropanation of Alkenes and in OH Insertion Reactions
作者:André B. Charette、Ryan P. Wurz、Thierry Ollevier
DOI:10.1002/hlca.200290023
日期:2002.12
a diazo-transfer reaction involving (trifluoromethyl)sulfonyl azide has been developed. These substrates undergo a rhodium-catalyzed cyclopropanation reaction with a variety of alkenes. A systematic study of the reaction indicated that the diastereoselectivity of the cyclopropanation could be effectively controlled through the modification of the steric bulk of the diazo reagent. A novel OH insertion
已经开发了一种通过涉及(三氟甲基)磺酰基叠氮化物的重氮转移反应制备α-硝基-α-重氮羰基衍生物的简便而高效的方法。这些底物与各种烯烃进行铑催化的环丙烷化反应。对反应的系统研究表明,通过改变重氮试剂的空间体积,可以有效地控制环丙烷化的非对映选择性。由α-硝基-α-重氮羰基试剂衍生的金属卡宾络合物的新型OH插入反应提供了相应的新型α-硝基-α-烷氧基羰基衍生物。