The syntheses of 6-methylene-2,4-cyclohexadien-1-imine and related o-quinonoids by FVT of 1-hetero-1,2,3,4-tetrahydronaphthalenes
作者:Marguerite Letulle、Pierre Guenot、Jean-Louis Ripoll
DOI:10.1016/s0040-4039(00)78895-2
日期:1991.4
Flash vacuum thermolysis (almost-equal-to 1000-degrees-C/10(-5) hPa) of 1,2,3,4-tetrahydroquinoline, chroman, and thiochroman, led upon loss of ethylene (retro-Diels-Alder reaction) to the o-quinonoids 1-3. These reactive monomers were identified by IR-UV at -196-degrees-C and/or MS/MS.