Synthesis of spiropyrans and arylquinones via Ru(ii)-catalyzed condition-controlled coupling of 3-aryl-2H-benzoxazinones with benzoquinones†
Xifa
Yang 
*a
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Abstract
Ru(II)-catalyzed condition-controlled divergent coupling between 3-aryl-2H-benzoxazin-2-ones and benzoquinones has been realized under operationally simple conditions, affording a series of structurally stable spiropyrans and valuable arylquinones. The potential of this method is also demonstrated by scale-up synthesis and derivatization. Additionally, an unprecedented cycloruthenated complex has been identified as a key intermediate.
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