ANNEN, ULRICH;REGITZ, MANFRED, TETRAHEDRON LETT., 29,(1988) N 14, 1681-1694
作者:ANNEN, ULRICH、REGITZ, MANFRED
DOI:——
日期:——
Homo-Diels-Alder and ene reactions of phosphaalkynes
作者:Ulrich Annen、Manfred Regitz
DOI:10.1016/s0040-4039(00)82016-x
日期:1988.1
3-dienes 1 and 6 react with phosphaalkynes 2 to form the bicyclic systems 3 and 7 containing λ3σ2-phosphorus atoms. Products 3 and 7 react with a further equivalent of 2 to furnish the tetracycles 4 and 8 by way of a previously unknown homo-Diels-Alder reaction. The enereaction 9 + 2 → 10 defines the limits of the cycloaddition process.