A Novel Approach for the Conversion of Primary Amides into Tetrazoles by Using Tributyltin Chloride and Sodium Azide in the Presence of DMF
作者:Ramesh Dandala、Korrapati Rao、Vijay Handa、Inti Rao、Ananta Rani、Sripelly Shivashankar、Andra Naidu
DOI:10.1055/s-2007-977458
日期:——
A novel and efficient one-pot synthesis of tetrazole -derivatives such as Irbesartan and its analogues has been described from the primary acid amide derivatives. Thus 2-alkyl-3-[ P-( O-amidophenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one derivatives or 4-[α-(acylamino)cyclopentamidomethyl]-2′-carboxamidobi-phenyl derivatives were treated with tributyltin chloride and sodium azide in O-xylene in the
四唑衍生物如厄贝沙坦及其类似物的新型和有效的一锅合成已经从初级酰胺衍生物中得到描述。因此2-烷基-3-[P-(O-酰氨基苯基)苄基]-1,3-二氮杂螺[4.4]非-1-烯-4-one衍生物或4-[α-(酰氨基)环戊酰胺甲基]-2'在DMF存在下,在邻二甲苯中用氯化三丁基锡和叠氮化钠处理-甲酰胺基联苯衍生物,得到厄贝沙坦及其类似物,不产生腈。还描述了这些新原料的合成,其中两种衍生物已用作制备-厄贝沙坦的新中间体。