Chameleon catches in combinatorial chemistry: Tebbe olefination of polymer supported esters and the synthesis of amines, cyclohexanones, enones, methyl ketones and thiazoles
作者:Christopher P. Ball、Anthony G. M. Barrett、Delphine Compère、Cyrille Kuhn、Richard S. Roberts、Marie L. Smith、Olivier Venier、Alain Commerçon
DOI:10.1039/a805874a
日期:——
Tebbe olefination of supported esters R1CO2CH2–polymer gave the corresponding vinyl ethers R1C(CH2)OCH2–polymer which were released, under acidic conditions, to produce methyl ketones R1COMe; by reductive amination, to produce amines R1CH(Me)NHR2; by bromination and reaction of R1CBr(CH2Br)OCH2-polymer with thioureas to produce thiazoles; or, for supported dienyl ethers derived from α,β-unsaturated esters, by Diels–Alder reaction and acid mediated cleavage to produce cyclohexanone derivatives.
负载酯R1CO2CH2–聚合物的Tebbe烯化作用得到了相应的乙烯基醚R1C(CH2)OCH2–聚合物,其在酸性条件下释放出甲基酮R1COMe;通过还原胺化作用得到了胺R1CH(Me)NHR2;通过溴化和R1CBr(CH2Br)OCH2–聚合物与硫脲反应得到了噻唑;或者对于由α,β-不饱和酯衍生的负载二烯基醚,通过Diels-Alder反应和酸介导的裂解得到了环己酮衍生物。