Heterocyclic β‐Enamino Esters, 34. New Types of Spiro Compounds by Addition and Cyclization Reactions of 3‐(2‐Imidazolidinylidene)‐ and 3‐(Tetrahydro‐2(1 H )‐pyrimidinylidene)dihydro‐2(3 H ‐furanones with Methyl Acrylate and Dimethyl Acetylenedicarboxylate | Zendy

Huang ZhiTang | Zendy; Wamhoff Heinrich | Zendy

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Heterocyclic β‐Enamino Esters, 34. New Types of Spiro Compounds by Addition and Cyclization Reactions of 3‐(2‐Imidazolidinylidene)‐ and 3‐(Tetrahydro‐2(1 H )‐pyrimidinylidene)dihydro‐2(3 H ‐furanones with Methyl Acrylate and Dimethyl Acetylenedicarboxylate

Author(s) -

Huang ZhiTang,

Wamhoff Heinrich

Publication year - 1984

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19841170521

Subject(s) - chemistry , dimethyl acetylenedicarboxylate , acrylate , benzene , sequence (biology) , methyl acrylate , medicinal chemistry , addition reaction , organic chemistry , stereochemistry , cycloaddition , catalysis , polymer , monomer , copolymer , biochemistry

The 2(3 H ‐furanones 1a – e react with methyl acrylate in benzene or dioxane solution to afford the spiro compounds 2a – e in an addition and cyclocondensation reaction sequence. With dimethyl acetylenedicarboxylate 1a, b give merely the addition products 3a, b , while 1c – e yields the spiro compounds 4a – c in a related addition‐cyclocondensation step.

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