Methyl 4-(chloromethyl)benzoate → HCID 70102981, compound

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Reaction Steps

Prepared from 2-(2-tert-butyldimethylsiloxyethyl)-3,4-dihydro-3-oxo-2H-1,4-benzoxazine by methods F and G, alkylating with 4-(methoxycarbonyl)benzyl chloride, to afford the alcohol as a white solid in 65% yield, mp=94°-95° C.; 1H NMR (CDCl3) δ8.00 (d, J=8.4 Hz, 2H), 7.30 (d, J=8.4 Hz, 2H), 6.95-7.04 (m, 2H), 6.89 (dt, J=2.1, 8.0 Hz, 1H), 6.77 (dd, J=7.8, 1.5 Hz, 1H), 5.20 (s, 2H), 4.86 (dd, J=5.4, 7.7 Hz, 1H), 3.82-3.96 (m, 5H with 3H singlet at δ3.89), 2.16-2.37 (m, 3H, one of which is exchangeable). 13C NMR (CDCl3) δ166.8, 166.5, 144.1, 141.1, 130.1 (CH), 129.4, 128.4, 126.3 (CH), 124.2 (OH), 122.8 (OH), 117.3 (OH), 115.2 (OH), 75.1 (OH), 58.7 (OH2), 52.0 (CH3), 45.1 (CH2), 33.1 (CH2). IR 3450-3500 (br), 1719, 1660 cm-1. MS 342 (MH+), 324 (M-OH)+, 310 (M-OMe)+. Anal. Calc'd. for C19H19NO5 : C, 66.85; H, 5.61; N, 4.10. Found: C, 66.48; H, 5.47; N, 3.97.

Provenance & Evidence