用乙氧基次亚膦酸二苯并二苯并-7-膦基降冰片二烯EtOP A(A = C 14 H 10,蒽)处理反查尔酮,然后正式消除乙醇,得到43,3,5-二苯基-2-磷呋喃(DPF) % 让。我们显示DPF的磷二烯部分在Diels-Alder反应中是有效的二烯,并与亲二烯体乙炔二羧酸二甲酯(DPF·DMAD,68%),降冰片烯(DPF·降冰片烯,73%)和乙烯(DPF·C 2)反应ħ 4,80%)环境条件下。DPF·C 2 H 4的温和加热 导致相应的Diels-Alder逆反应,从而将DPF建立为能够可逆结合乙烯的分子。
Treatment of trans-chalcone with dibenzo-7-phosphanorbornadiene EtOPA (A = C14H10, anthracene), a source of ethoxyphosphinidene, followed by formal elimination of ethanol yields 3,5-diphenyl-2-phosphafuran (DPF) in 43% yield. We show that the phosphadiene moiety of DPF is a potent diene in the Diels–Alder reaction and reacts with dienophiles dimethyl acetylenedicarboxylate (DPF·DMAD, 68%), norbornene
用乙氧基次亚膦酸二苯并二苯并-7-膦基降冰片二烯EtOP A(A = C 14 H 10,蒽)处理反查尔酮,然后正式消除乙醇,得到43,3,5-二苯基-2-磷呋喃(DPF) % 让。我们显示DPF的磷二烯部分在Diels-Alder反应中是有效的二烯,并与亲二烯体乙炔二羧酸二甲酯(DPF·DMAD,68%),降冰片烯(DPF·降冰片烯,73%)和乙烯(DPF·C 2)反应ħ 4,80%)环境条件下。DPF·C 2 H 4的温和加热 导致相应的Diels-Alder逆反应,从而将DPF建立为能够可逆结合乙烯的分子。