SYNTHESIS OF HETEROCYCLES - CONSTRUCTION OF THE 1-AZABICYCLO[2.2.1]HEPTYL SYSTEM BY SEQUENTIAL RING-CLOSURE OF ACYCLIC BETA-AMMONIO SUBSTITUTED RADICALS
Ew. Della et Am. Knill, SYNTHESIS OF HETEROCYCLES - CONSTRUCTION OF THE 1-AZABICYCLO[2.2.1]HEPTYL SYSTEM BY SEQUENTIAL RING-CLOSURE OF ACYCLIC BETA-AMMONIO SUBSTITUTED RADICALS, Tetrahedron letters, 37(32), 1996, pp. 5805-5808
Treatment of an irradiated solution of 1-(2-propynyl)-1-bis(2-phenylse
lenylethyl)ammonium iodide in tert-amyl alcohol with tributyltin hydri
de is found to be an effective procedure for the synthesis of 1,4-dime
thyl-1-azoniabicyclo-[2.2.1]heptane iodide, Attachment of a trimethyls
ilyl or phenyl substituent to the terminal carbon of the triple bond i
n the alkynyl salt leads to bridgehead-substituted bicyclic heterocycl
ic salts. Copyright (C) 1996 Elsevier Science Ltd