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A facile synthesis of dihydrobenzofuranols by photocyclization of (2-alkoxy-5-methyl-phenyl)(aryl) methanone and ethyl 2-aroyl-4-methylphenyloxyacetates

โœ Scribed by S. Shashikanth; B. S. Sudha; S. A. Khanum

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
96 KB
Volume
16
Category
Article
ISSN
1042-7163

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โœฆ Synopsis

Irradiation of 2-alkoxy substituted ben- zophenones 2a-f and ethyl 2-aroyl-4-methylphenyloxyacetates 2g-i in benzene and in acetonitrile underwent photocyclization to substituted dihydrobenzofuranols 3a-i with 3a-c in very less yield being racemate and 3d-i in good yield being mixture of cis-trans isomers showing high stereoselectivity in benzene and decreased stereoselectivity in acetonitrile.

๐Ÿ“œ SIMILAR VOLUMES

A facile synthesis of structurally novel
A facile synthesis of structurally novel 1-aryl-2-arylamino-4-alkyl/phenyl-5-aroyl-1H-imidazoles from amidinothioureas
โœ Jitendra C. Kaila; Arshi B. Baraiya; Kamala K. Vasu; V. Sudarsanam ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 172 KB

We report here a convenient and efficient two-step synthesis of 1-aryl-2-arylamino-4-alkyl/phenyl-5aroyl-1H-imidazoles from easily available amidinothioureas. Guanylation of amidinothioureas 1 using mercury(II) chloride as a thiophile yielded amidinoguanidines 2, which reacted with various phenacyl