Ohno H, Takahashi R, Suga T, Soeta T, Ukaji Y. Divergent transformation of
C,
N-cyclic-
N'-acyl azomethine imines by reaction with diazo compounds.
Org Biomol Chem 2023;
21:7891-7894. [PMID:
37747044 DOI:
10.1039/d3ob01165h]
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Abstract
C,N-cyclic-N'-acyl azomethine imines with isoquinoline skeletons were investigated for their reactivity with diazo compounds via two different pathways. During the reaction with ethyl diazoacetate, an α-diazoacetate moiety was introduced at the C1-position of the resulting tetrahydroisoquinolines. Alternatively, diazomethane or trimethylsilyldiazomethane was used to synthesize 3-benzazepine derivatives via ring expansion.
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