(R = Ph 5, tBu 6, Cy 7) were reacted to give the products tBu2P(CCR)NP(BH3)iPr2 (R = Ph 8, tBu 9, Cy 10) and Ph2P(CCR)NP(BH3)iPr2 (R = Ph 11, tBu 12, Cy 13). Subsequent thermally induced or Lewis acid catalyzed intramolecular hydroboration of 8 and 11 afforded the PNPCB heterocyclic compounds Ph2P(CCHPh)NP(BH2)iPr214 and tBu2P(CCHPh)NP(BH2)iPr215, respectively. Compounds 8–11 and 13–15 were crystallographically
化合物iPr 2 P(BH 3)N 3 1,t Bu 2 PC CR(R = Ph 2,t Bu 3,Cy 4)和Ph 2 PC CR(R = Ph 5,t Bu 6,Cy 7)为反应得到产物t Bu 2 P(C CR)NP(BH 3)iPr 2(R = Ph 8,t Bu 9,Cy 10)和Ph 2 P(CCR)NP(BH 3)iPr 2(R = Ph 11,t Bu 12,Cy 13)。随后的热诱导或
路易斯酸催化的8和11分子内氢
硼化得到
PNPCB
杂环化合物Ph 2 P(C CHPh)NP(BH 2)iPr 2 14和t Bu 2 P(C CHPh)NP(BH 2)iPr 2 15, 分别。化合物8-11和13-15 进行了晶体学表征,并考虑了合成无机杂环的机理和意义。