J. Chem. Soc., Perkin Trans. 1, 1998, 3151–3155 3151 ... Chemistry Department, Reading University, Whiteknights, Reading, UK RG6 6AD ... Received (in Cambridge) 20th July 1998, Accepted 18th August 1998 ... A concise synthesis of two novel chromeno[3,4-b]pyridin -9-ones (as their ethylene ketals) has been achieved using, as a key step, the reaction between a mixed cuprate derived from 6-methoxy-2-methyl-3-lithiopyridine and 4-tert- ...
