A CONVENIENT PREPARATION OF STERICALLY CROWDED 1,9-DISUBSTITUTED DIBENZOTHIOPHENES AND 3,3'-DISUBSTITUTED DIARYL SULFIDES

DOI: 10.3987/COM-91-5683

Source and publish data:

Heterocycles p. 675 - 678 (1991)

Update date:2022-08-04

Topics:

Authors:

Furukawa, Naomichi

Kimura, Takeshi

Horie, Yoji

Ogawa, Satoshi

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Article abstract of DOI:10.3987/COM-91-5683

Thianthrene-5-oxide (1) reacted with 2.2 equivalents of lithium diisopropylamide to give 4,6-dilithiated 1 which was converted to 4,6-disubstituted thianthrene-5-oxides (3). 3 afforded sterically crowded 1,9-disubstituted dibenzothiophenes (4) in moderate yields on treatment with n-butyllithium or phenyllithium.

Full text of DOI:10.3987/COM-91-5683

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