A facile synthesis and highly atom economic 1,3-dipolar cycloaddition of hexahydropyrido[3,4-c][1,5]benzothiazepines with nitrile oxide: stereoselective formation of hexahydro[1,2,4]oxadiazolo[5,4-d]pyrido[3,4-c][1,5]benzothiazepines
作者:Raju Ranjith Kumar、Subbu Perumal
DOI:10.1016/j.tet.2007.05.097
日期:2007.8
(E)-1-methyl-3,5-bis(arylidene)-4-piperidones in the presence of a catalytic amount of acetic acid under solvent-free microwave irradiation. These dipolarophiles undergo a highly atom economic 1,3-dipolar cycloaddition with nitrile oxide to afford a series of novel 6-methyl-1-phenyl-8-aryl-4-[(E)-arylmethylidene]-4,5,6,7,7a,8-hexahydro[1,2,4]oxadiazolo[5,4-d]pyrido[3,4-c][1,5]benzothiazepines stereoselectively
获得了一系列新的2-甲基-11-芳基-4-[(E)-芳基亚甲基] -1,2,3,4,11,11a-六氢吡啶并[3,4- c ] [1,5]苯并噻氮平在无溶剂微波辐射下,在催化量的乙酸存在下,邻氨基苯硫酚与(E)-1-甲基-3,5-双(亚芳基)-4-哌啶酮的反应。这些双亲性化合物与一氧化二氮进行高度原子经济的1,3-偶极环加成反应,得到一系列新颖的6-甲基-1-苯基-8-芳基-4-[[(E)-芳基亚甲基] -4,5,6, 7,7a,8-六氢[1,2,4]恶二唑并[ 5,4- d ]吡啶并[3,4- c ] [1,5]苯并硫氮杂s类化合物。