An efficient synthesis of dihydro- and tetrahydropyrans via oxonium–ene cyclization reaction
作者:Somasekhar Bondalapati、Udagandla C. Reddy、Pipas Saha、Anil K. Saikia
DOI:10.1039/c1ob00033k
日期:——
An efficient method has been developed for the synthesis of 2,3-dihydropyrans and 4-methylenetetrahydropyrans from aldehydes and substituted homoallyl alcohols in benzene mediated by boron trifluoride etherate in good yields. The reaction proceeds viaoxonium–ene reaction.
已开发出一种有效的方法,用于从醛和取代的烯丙基醇中合成2,3-二氢吡喃和4-亚甲基四氢吡喃。 苯 由...介导 三氟化硼醚化物丰产。该反应通过-烯反应进行。