Phosphorus-nitrogen compounds. Part 49. The synthesis and mechanism of formation of 6-chloro-5,6,7,12-tetrahydro-2,5,7,10-tetramethyldibenzo[d,g][1,3,2]-diazaphosphocine 6-oxide and 6-sulphide
A reaction mechanism is proposed for the formation of the title compounds in the reactions between N,Ndimethyl-p-toluidine and phosphoryl and thiophosphoryl chlorides. The synthesis of 2,2′-methylenebis(p-toluidine) and 2,2′-methylenebis(N-methyl-p-toluidine) are described, as are their reactions with phosphoryl and thiophosphoryl chlorides.