Rearrangements in heterocyclic synthesis: a novel translocation of an (N-amino-N-methylamino)methylene group from a heterocyclic N-amino-N-methylformamidine side chain to the vinylogous nitrile function
Rearrangements in heterocyclic synthesis: a novel translocation of an (N-amino-N-methylamino)methylene group from a heterocyclic N-amino-N-methylformamidine side chain to the vinylogous nitrile function
Amination of adenine with H2N-O-SO3H in alkaline media afforded 1-, 3-, 7- and 9-aminoadenine isomers at a ratio of about 1:1:3:1. In neutral media, the product ratio of the isomers changed to about 3:1:1:0. These results were different from the regioselectivity obtained by methylation of adenine with dimethyl sulfate under similar conditions. Amination of adenine with dinitrophenoxyamine in DMF gave 1-aminoadenine as the main product and this regioselectivity was also different from that of methylation with CH.3I. Chemical characteristics of these N-amino adenines are described.
HOSMANE, RAMACHANDRA S.;LIM, BENJAMIN B.;BURNETT, FRIEDRICH N., J. ORG. CHEM., 53,(1988) N 2, 382-386
作者:HOSMANE, RAMACHANDRA S.、LIM, BENJAMIN B.、BURNETT, FRIEDRICH N.