1981
DOI: 10.1002/chin.198123138
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ChemInform Abstract: INTRAMOLECULAR CYCLIZATIONS OF BIPHENYL‐2‐CARBOXYL RADICALS: EVIDENCE FOR A Π‐STATE AROYLOXYL RADICAL

Abstract: Biphenyl‐2‐carboxyl‐Radikale (II), erzeugt durch Homolyse entsprechender Acylhypoiodite [aus (I)] cyclisieren sich intramolekular hauptsächlich durch "Ar2‐6"‐Cyclisierung unter Bildung jeweils des Benzocumarins(III) [wobei die 2′‐Alkoxybiphenyl‐2‐carboxyl‐Radikale (IIb)‐(IIe) nicht die erwarteten "Ar1‐5"‐Cyclisierungsprodukte geben mit Ausnahme von (IId) und (IIe), wo diese Produkte (IV) in geringer Menge als Nebenprodukte erhalten werden ‐ , sondern eine homolytische ipso‐Substitution des 2′‐Substituenten ein… Show more

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“…Hydrolysis of 13 afforded 14. 14 The hydroxy group of 14 was methylated by using 18-crown-6 as phase transfer agent, as reported by Glover et al 15 The resulting analogue 15 was converted to the methyl ester 16 with thionyl chloride and methanol at room temperature. 16 Compound 17 was obtained by reduction of 13 with lithium aluminum hydride.…”
Section: Resultsmentioning
confidence: 99%
“…Hydrolysis of 13 afforded 14. 14 The hydroxy group of 14 was methylated by using 18-crown-6 as phase transfer agent, as reported by Glover et al 15 The resulting analogue 15 was converted to the methyl ester 16 with thionyl chloride and methanol at room temperature. 16 Compound 17 was obtained by reduction of 13 with lithium aluminum hydride.…”
Section: Resultsmentioning
confidence: 99%