Bc. Bookser, 2-Benzyloxymethyl-5-(tributylstannyl)tetrazole. A reagent for the preparation of 5-aryl- and 5-heteroaryl-1H-tetrazoles via the Stille reaction, TETRAHEDR L, 41(16), 2000, pp. 2805-2809
2-Benzyloxymethyl-5-(tributylstannyl)tetrazole (2) is a useful reagent for
the conversion of aryl- and heteroarylhalides (bromides and iodides) to 5-a
ryl- and 5-heteroaryl-1H-tetrazoles. The conversion entails a copper(I) iod
ide co-catalyzed Stille palladium-catalyzed cross-coupling reaction and a N
-benzyloxymethyl deprotection step. Coupling was possible with electron neu
tral and electron poor substrates in yields ranging from 35-93%. (C) 2000 E
lsevier Science Ltd. All rights reserved.