Synthesen von Heterocyclen, 45. Mitt.: �ber eine Synthese von substituierten Barbiturs�uren

Method for catalytic dehalogenations via trialkyltin hydrides

“…(1.7), 186 (1.3), 181 (3), 180 (3), 175 (3), 165 (5), 144 (2), 143 (7), 142 (2), 141 (15), 140 (4), 127 (2), 126 (10), 124 (5), 123 (15), 111 (5), 109 (4), 108 (45), 98 (3), 96 (4), 94 (2), 85 (5), 84 (24), 83 (9), 82 (3), 80 (3), 73 (16), 70 (13), 69 (23), 68 (5), 67 (3), 59 (3), 58 (45), 57 (100), 56 (8), 55 (12), 54 (4), 53 (20), 52 (3), 43 (9), 42 (16), 41 (53), 39 (17). ly tin hydrides have usually been employed in stoichiometric amounts (either preformed or generated in situ from the nonvolatile polymethylhydrosiloxane and trialkyltin oxides).1'2 The product, once formed by these procedures, must be separated from a full 1 equiv of trialkyltin halide.…”