BOC

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BOC

, t-BOC
Abbreviations formerly used for t-butoxycarbonyl; current usage is Boc.

Boc

Abbreviation for t-butoxycarbonyl.
References in periodicals archive ?
(R)-tert-Butyl-3-acetoxypyrrolidine-1-carboxylate (5, Method B) was isolated as a pale yellow oil (61.6%); [sup.1]HNMR [delta] 5.14 (br m; [sup.1]H, [sup.1]H, ring diastereotopic O-CH); 3.18-3.46 (br m, 4H, ring N-C[H.sub.2]); 1.92 (s, 3H, COC[H.sub.3]); 1.88 (partially obscured m, 2H, ring 4-C[H.sub.2]); 1.33 (s, 9H, t-BOC C[H.sub.3]); [sup.13]C NMR [delta] 21.2, 28.6, 30.8, 31.6, 43.7, 44.1, 51.5, 51.9, 73.1, 74.0, 79.6, 154.5, and 170.8; IR (film) 2978, 2885, 1741, 1698, 1406, 1366, 1245, 1169, 1116, and 1096 [cm.sup.?1]; EIMS (70eV): 228 [[M-H].sup.+], 169 [[M-C[H.sub.3]C[O.sub.2]H].sup.+], 156 [[M-t-BuO].sup.+], 113 [[[C.sub.5][H.sub.7]N[O.sub.2]].sup.+], and 57 [[t-Bu].sup.+].
(R)-tert-Butyl-3-(allyloxy)pyrrolidine-1-carboxylate (6, Method C) was isolated as a clear oil (79.2%); [sup.1]H NMR [delta] 5.78 (m, [sup.1]H, vinylic CH); 5.10 (dd, [delta] = 4.0 Hz, 9.8 Hz, 2H, vinylic C[H.sub.2]); 3.94 (m, [sup.1]H, ring diastereotopic O-CH); 3.84 (m, 2H, diastereotopic O-C[H.sub.2]); 3.30 (m, 4H, ring N-C[H.sub.2]); 1.84 (m, 2H, diastereotopic ring 4-C[H.sub.2]); 1.34 (s, 9H, t-BOC C[H.sub.3]); [sup.13]C NMR [delta] 28.7, 30.7, 31.7, 43.7, 44.2, 50.9, 51.6, 70.0, 79.3, 84.6, 117.2, 134.7, and 154.7; IR (film) 3081, 2977, 2933, 2884, 1698, 1478, 1455, 1365, 1254, 1169, 1118, and 1079 [cm.sup.?1]; EIMS (70 eV): 227 [[M].sup.+], 171 [[M-[C.sub.4][H.sub.8]].sup.+], 156 [[M-t-BuO].sup.+], 113 [[[C.sub.5][H.sub.7]N[O.sub.2]].sup.+], and 57 [[t-Bu].sup.+].
(S)-tert-Butyl-3-(allyloxy)pyrrolidine-1-carboxylate (14, Method C) was isolated as a clear oil (74.2%); [sup.1]H NMR [delta] 5.78 (m, [sup.1]H, vinylic CH); 5.10 (dd, [delta] = 4.0Hz, 9.8, 2H, vinylic C[H.sub.2]); 3.94 (m, [sup.1]H, ring diastereotopic O-CH); 3.84 (m, 2H, diastereotopic O-C[H.sub.2]); 3.30 (m, 4H, ring N-C[H.sub.2]); 1.84 (m, 2H, diastereotopic ring 4-C[H.sub.2]); 1.34 (s, 9H, t-BOC C[H.sub.3]); [sup.13]C NMR [delta] 28.7, 30.7, 31.7, 43.7, 44.2, 50.9, 51.6, 70.0, 79.3, 84.6, 117.2, 134.7, and 154.7; IR (film) 3081, 2977, 2933, 2884, 1698, 1478, 1455, 1365, 1254, 1169, 1118, and 1079 [cm.sup.?1]; EIMS (70 eV): 227 [[M].sup.+], 171 [[M-[C.sub.4][H.sub.8]].sup.+], 156 [[M-t-BuO].sup.+], 113 [[[C.sub.5][H.sub.7]N[O.sub.2]].sup.+], and 57 [[t-Bu].sup.+].