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The deoxygenation of 1‐alkyl‐3‐methyl‐3‐phospholene 1‐oxides, which may be regarded as trialkyl phosphine oxides (R3PO), and the reduction of dialkyl‐phenylphosphine oxides (R2PhPO) and methyl‐diphenylphosphine oxide (MePh2PO) have been elaborated by applying user‐friendly silanes, such as tetramethyldisiloxane (>SiH–O–HSi<) and polymethylhydrosiloxane ((O–SiH)n) under solvent‐free, catalyst‐free,...
The [2+2] cycloaddition reaction of dimethyl acetylenedicarboxylate (DMAD) and the P O moiety of cyclic P-(2,4,6-triisopropylphenyl) phosphine oxides giving an entry to oxaphosphetes is of general value and extended to cyclic and alicyclic phosphine oxides with different trialkylphenyl substituents on the phosphorus atom. The structures of the products obtained by the [2+2] cycloaddition have been...
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