2,5‐Dimethylene‐2,5‐dihydrofuran (3), generated flash pyrolitically, underwent di‐ and trimerization reactions to give cyclic dimer and trimer. Compound 3 was trapped with methanol, ethanol, bromine, acetic acid, thiophenol and oxygen. Results from trapping experiments suggest that the diradical form of 3 is involved.

No abstract

No abstract

Flash vacuum pyrolysis of benzyl beazoate (3) at temperatures in the range 750-900'C and at 10. 2 torr gave diphcnylmethane (5) as the major product with toluene (6) and eight other trace products. namely biphenyl (7), dibenzyl (8),2-, 3-, 4-phenyltoluenes (9, )(), 11, respectively), fluorene (12), benzyl alcohol (4) and benzaldehyde (13). The mechanism or formation of these products is proposed to involve benzyl and phenyl radicals.

No abstract