A regioselective approach synthesizes m-terphenyls and naphthalenes from vinyl sulfoxonium ylides, suggesting significant synthetic versatility.
Herein, we report a regioselective [4 + 2] benzannulation strategy for the efficient synthesis of m-terphenyls and naphthalenes from vinyl sulfoxonium ylides, thiophenols, and electron-deficient alkynes. The selectivity of the benzannulation is governed by the nature of the ylide's stabilizing group. This modular approach features a broad substrate scope and enables streamlined access to highly substituted arenes with significant synthetic versatility.
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Davas et al. (2025) studied this question.
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