“…5, 143.3, 136.2, 135.8, 133.9, 130.5, 130.0, 129.2, 127.9, 127.4, 125.5, 21.0, 19.0. MS (EI) m/z = 304.1 (M + ). 14 According to the general procedure using 3-methylbenzoyl succinimide (217 mg, 1.0 mmol) and tosyl hydrazide (205 mg, 1.1 mmol), the product 3ca (207 mg, 0.68 mmol, 68% yield) was obtained as a white solid. m.p.…”