作者:Vanda Bilinski、André S. Dreiding、Hans Hollenstein
DOI:10.1002/hlca.19830660743
日期:1983.11.2
Flow thermolysis of 2-propynyl propiolate (5) at 580° afforded butatriene (6) (ca. 50%) and, as by-products, 4-methylene-2-cyclobuten-1-one (7), 2-ethynylpropenal (8), 1-penten-4-yn-3-one (9), 4-penten-2-ynal (10) (total ca. 10%), along with some propynal, acetylene, CO2 and CO. In the same way, propiolic acid (1,1-D2)-2-propynyl propiolate (11) led to (1,1-D2)-butatriene (12) and a little 4-((D2)
流热解2-丙炔基丙炔酸的(5)在580℃,得到butatriene (6) (约50%)和,作为副产物,4-亚甲基-2-环丁烯-1-酮(7),2- ethynylpropenal ( 8),1-戊烯-4-炔-3-酮(9),4-戊烯-2-炔醛(10) (总约10%),具有一定的丙炔,乙炔,CO沿2和CO。在同样,丙酸(1,1-D 2)-2-丙炔基丙酸酯(11)生成(1,1-D 2)-丁三烯(12)和少量4-((D 2)亚甲基)-2 -cyclobuten-1-one (13)。提出了将5转化为6并将11转化为12的机制,这也解释了7、8、9和10以及13的形成。已公开的13 C-NMR信号之一的位置丁三烯(6)必须进行修改。甲基- (1)和丙酸乙酯(2)的热解导致2-丁烯-4-油化物(3)和2-戊烯-4-油化物(4)的收率低。