Sa. Terent'Eva et al., Synthesis and crystal and molecular structures of 2-diethylaminomethyl- and 2-chloromethyl-2,2 '-spirobi[benzo-1,3,2-oxazaphospholines], RUSS J G CH, 71(3), 2001, pp. 330-336
Chloromethylphosphonic dichloride reacts with o-aminophenol in the presence
of triethylamine to form 2-chloromethyl-1,3,2-benzoxazaphospholine 2-oxide
and 2-chloromethyl-2,2'-spirodi[1,3,2-benzoxazaphospholine] in a 1 : 1 rat
io. 3-Diethylaminomethyl-2-ethoxy-1,3,2-benzoxazaphospholine reacts with o-
aminophenol to form 2-diethylaminomethyl-2,2'-spirodi[benzo-1,3,2-oxazaphos
pholine]. The crystal and molecular structures of the synthesized spirophos
phoranes were determined by single crystal X-ray diffraction.