Steric Hindrance-Driven Access to 3,4,7-Trihydro-1,2-oxaphosphepine 2‑Oxides from Vinyloxiranes and Phosphoryl Diazomethanes
Various 3,4,7-trihydro-1,2-oxaphosphepine 2-oxides are synthesized in satisfactory to excellent yields from 2-aryl-2-vinyloxiranes and in situ-generated phosphenes from phosphoryl diazomethanes via the phosphene-induced and steric hindrance-driven ring expansion of vinyloxiranes. The reaction is an...
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2025
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