… ,4-dihydro-2ff -pyran (1) and 2alkoxy-3,4-dihydro-2H-pyrans … dimethyl acetylenedicarboxylate.
Refluxing a toluene solution of 2-methoxy-6-methyl-3,4dihydro-2ff-pyran (3a) and dimethyl …

… 3,4-dihydro-2H-pyrans via four-component reactions of arylamines, acetylenedicarboxylate,
… reaction of arylamine with dimethyl acetylenedicarboxylate to arylidine cyclic 1,3-diketones. …

… 5- Hydrazinopyridazin-3(2H) -ones 1 reacted with dimethyl acetylenedicarboxylate 2 to give
4,6dihydropyridazino[4,5-c] pyridazin-5- (1 H) -ones 3 by cyclization with dehydrogenation. …

Reaction of dimethyl acetylenedicarboxylate with 2-ethyl-3-phenyl-2H-5,6-dihydro-1,2-…
and Gygax found that the ammonium ion 3-cyclohexyl-l,6dimethyl-2-oxa-3-azoniabicyclo[4.4.0]…

… We have now found that the title compounds 1 react with 0.5 mol of dimethyl
acetylenedicarboxylate (DMAD), in the presence of a base to give the (2,3-dihydro-l,3-oxazin-6-ones) …

… 1H-Indenes (1) react with dimethyl acetylenedicarboxylate (DMAD), unlike maleic anhydride
and other ethylenic dienophiles, without prior isomerizationto 2/f-indenes (2), giving a 1:1 …

… The reaction of guaiazulene (4) and dimethyl acetylenedicarboxylate (ADM) in tetralin or …
5), the major part of which is derived from dimethyl 2a,4a-dihydrocyclopent[cd]azulene-3,4-…

… dimethyl acetylenedicarboxylate to give a dihydrocycl- [3,2,2]azine (dimethyl 5,6-dihydro-5,5…
During these experiments we discovered that 3H-pyrrolizine and acetylenedicarboxylic …

… with dimethyl acetylenedicarboxylate gives dimethyl 1,3-… of dimethyl 1,3-diphenylpyrazoline-4,5-dicarboxylate
and … the nucleophilic addition to dimethyl acetylenedicarboxylate, …

… Abstract - The overall rates of reaction of l-substltuted-l(1-methyl-2-1ndolyl)ethenes with
dimethyl acetylenedicarboxylate … reaction of the system with dimethyl acetylenedicarboxylate, …