1-Butyne → (3E,11Z)-3,11-tetradecadienyl acetate

Starting from 1-butyne and 1-bromo-6-(tetrahydropyran-2-yloxy)-hexane (22), the (3E,11Z)-3,11-tetradecadien-1-yl acetate (30) was prepared by a synthetic route similar to that used for the preparation of (3E,8Z)-3,8-tetradecadien-1-yl acetate (21), as depicted in the following scheme. ##STR18## The yield was 15% [17 mg; 96% isomeric purity (GC)] based on the starting material, 1-bromo-6-(tetrahydropyran-2-yloxy)hexane (22). 1H NMR (500 MHz) δ: 5.51 (dtt, J=15.1, 6.8, 6.8, 1.2, 1.5 Hz, 1H, =CH -3), 5.35 (m, 3H, CH=CH -4, 11, 12), 4.06 (t, J=6.8, 6.8 Hz, 2H, CH2 -1), 2.31 (dddt, J=1.2, 1.2, 6.8, 6.8, 6.8 Hz, 2H, CH2 -2), 2.05 (s, 3H, COCH3), 2.02 (m, 6H, CH2 -5, 10, 13), 1.36-1.24 (m, 6H, CH2 -6, 7, 8, 9), 0.95 (t, J=7.3, 7.6 Hz, 3H, CH3). 13 C NMR (100.6 MHz) δ: 171.1 (C=O), 133.6 (=CH-3), 131.6 (=CH-12), 129.3 (=CH-11), 125.0 (=CH-4), 64.1 (CH2 -1), 32.6 (CH2 -2), 31.9 (CH2 -6), 29.7 (CH2 -8), 29.3 (CH2 -7), 29.1 (CH2 -9), 29.0 (CH2 -10), 27.1 (CH2 -5), 21.0 (COCH3), 20.5 (CH2 -13), 14.4 (CH3 -14). MS [EI, m/z(%)] 192 (M+ -60, 6), 163 (6), 149 (9), 135 (12), 121 (16), 107 (16), 96 (28), 95 (37), 93 (25), 82 (50), 81 (60), 80 (35), 79 (36), 69 (33) 68 (64), 67 (97), 55 (45), 43 (100), 41 (67). IR (CCl4, cm-1) 3006 (=CH cis str), 1743 (C=O), 1238, 1036 (C--O), 969 (=CH trans wag). IR (gas phase, cm-1) 3012 (cis =C--H str), 2934 (CH2), 1761 (C=O), 1231, 1038 (--O--), 968 (=CH trans wag).

ORDレコード

ord-2f15776952b34a539da4eb150087740b

出典データセット

uspto-grants-1998_03

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US05728376