Diazonium salts efficiently serve as electrophilic aminating reagents of esters. The reaction of arenediazonium tetrafluoroborates with ketene silyl ketals yielded α-azo or α-hydrazono esters in good to excellent yields under very mild conditions. Hydrogenation of those esters gave α-amino esters quantitatively.
                                    重氮盐有效地用作酯的亲电胺化剂。四
氟硼酸芳族重氮鎓与
乙烯酮甲
硅烷基
缩酮的反应在非常温和的条件下以良好或优异的收率得到了α-偶氮或α-
肼基酯。这些酯的氢化定量地得到α-
氨基酯。