87937-56-2Relevant academic research and scientific papers
(4 + 2) Cycloaddition of Ketenes and β-Methoxy α,β-Unsaturated Ketones: 2-Pyranones
Brady, William T.,Agho, Michael O.
, p. 5337 - 5341 (2007/10/02)
The cycloaddition of diphenyl- and various chloroketenes to β-methoxy α,β-unsaturated ketones afforded (4 + 2) cycloaddition products.The cycloadducts resulting from the chloroketenes were converted to 2-pyranones on treatment with zinc in moist acetic acid.The cycloaddition products from chloroketenes and β-(methoxymethylene)-α-tetralone were readily converted to substituted benzocoumarins.
