UNEXPECTED TRANSFORMATION OF SPIRO 3-CYANOMETHYL-3-METHYL-1,2,3,4,5,6 HEXAHYDROBENZO[ f ]ISOQUINOLINIUM-1,2' (1',2',3',4'-TETRAHYDRONAPHTHALEN-1'-ONE) CHLORIDE TO SPIRO-3,4,5,6-TETRAHYDRO-2 H -BENZO[ h ]CHROMENE-2,2'-(TETRAHYDRONAPHTHALEN-1'-ONE)