ChemInform Abstract: Preparative Electrolysis of Partially Hydrogenated 2H‐Pyrimido(6,1‐a)isoquinolines.

Pricken, A.; Fueloep, F.; Pflegel, P.; Bernáth, G.

doi:10.1002/chin.198819203

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1994

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“…(*) (122) and dichloroacetyl chloride, in the presence of TEA, furnished (126). The trans isomer (123) gave (127).…”

Section: Cycloadditionsmentioning

confidence: 99%

Fused‐Skeleton Saturated Six‐Membered 1,3‐N,O, N,N and N,S Heterocycles. Fused‐Skeleton Aryl‐Substituted Saturated Isoindolones

Bernáth

1994

Bulletin des Soc Chimique

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In the introduction, a brief survey is given of the main types of fused-skeleton saturated six-membered 1,3-heterocycles serving as model compounds in our earlier investigations and as starting compounds in the present studies. The synthesis and conformational analysis of aryl-substituted fused-skeleton saturated 1 ,boxazines and of aryl-substituted hetero-condensed saturated isoindolones are treated. cis-trans isomerization in the saturated isoindolone moiety of the resulting tricyclic, tetracyclic and pentacyclic systems is discussed in connection with the ring-closure reactions of cis-and trans-1 ,Zdisubstituted 1,2-and 1,3-difunctional alicyclic compounds to give alicycle-fused six-membered 1,3-heterocycles. The cycloaddition reactions of dihydro-1,3 and 3,l-oxazines and the conformations of the alicycle-fused tetrahydrooxazine-azetidinone derivatives obtained are presented. Methods are given for the preparation of saturated thiazolo-and thiazino[2,3-b]quinazolinones. Unambiguous, mainly one-pot syntheses for the preparation of 1,3-heterocycles by a retro Diels-Alder method are discussed.

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“…(*) (122) and dichloroacetyl chloride, in the presence of TEA, furnished (126). The trans isomer (123) gave (127).…”

Section: Cycloadditionsmentioning

confidence: 99%

Fused‐Skeleton Saturated Six‐Membered 1,3‐N,O, N,N and N,S Heterocycles. Fused‐Skeleton Aryl‐Substituted Saturated Isoindolones

Bernáth

1994

Bulletin des Soc Chimique

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ChemInform Abstract: Preparative Electrolysis of Partially Hydrogenated 2H‐Pyrimido(6,1‐a)isoquinolines.

Abstract: ChemInform Abstract The partially hydrogenated 2H-pyrimido(6,1-a)isoquinolines (I) are electrochemically reduced at the cyclic azomethine bond to form the compounds (II).

Cited by 1 publication

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Fused‐Skeleton Saturated Six‐Membered 1,3‐N,O, N,N and N,S Heterocycles. Fused‐Skeleton Aryl‐Substituted Saturated Isoindolones

Fused‐Skeleton Saturated Six‐Membered 1,3‐N,O, N,N and N,S Heterocycles. Fused‐Skeleton Aryl‐Substituted Saturated Isoindolones

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