A One Pot Synthesis of 5,7-Diphenyl-2,3-dihydro-1H-pyrrolizine

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• Physical data: MP=149–150° (uncor.) From ethanol. 1H NMR(Varian XL-200)δ=2.51–2.68(2H.m), 3.15(2H,t, J=7.3Hz), 4.18(2H,t,J=7.0Hz), 6.78(1H,s), 7.14–7.33(2H,m) 7.35–7.47(4H,m), 7.51–7.63(4H,m). 13C NMR(decoupled)(Varian XL-200) with assignment,[ ]=rel. intensity δ=25.22[4.0] C2, 27.79[4.1] C1, 46.53[4.2] C3, 108.52[4.7] C6, 116.01[1.1] C7, 124.56[5.1] & 125.82[5.2] C4,a, & C4′b′ 125.05[9.8], 125.64[9.6], 128.48[9.9] & 128.57[9.9] C2′a, C3′a, C2′b, & C3′b, 129.18[1.0] C7a, 133.25[1.2] C5, 135.84[1.2] & 136.25[1.2] C1′a, & C1′b. MS (Finnigan-MATITD) Molecular mass(C19H17N)=259, 260(M+1)(12), 259(M)(100), 258(M-1)(51), 230(M-C2H2,H)(6), 191(M-C4H8N)(5), 182(M-C6H5)(19), 128(10), 115(9), 102(6), 91(6), 77(22)
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