Title
| - Sulfur- and selenium-promoted cyclization of allenic phosphonates and phosphinates to substituted 1,2-oxaphosphol-3-enes: stereochemical consequences at phosphorus. The crystal and molecular structure of (Z)-3,5-di-tert-butyl-2-methoxy-4-(phenylseleno)-1,2-oxaphosphol-3-ene 2-oxide
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