Synthesis and characterization of novel organotin—phosphorus compounds

Synthesis and Characterization of Novel Organotin-Phosphorous Compounds II

“…The active alkyltin groups were first attached to the meta position of the benzene ring [9,10] and the resulting aldehyde was then allowed to react with aniline and with a selected substituted aniline [9] such as p -chloroaniline, m -trifluoromethylaniline, and m -methoxyaniline giving a highly substituted Schiff base (imine) which is reacted directly with a phosphate ester such as diphenyl phosphate to give solid producs IV a-c (Scheme 1). …”

“…Assignments of the 13 C chemical shifts of rings 1, 2 and 3 were based on comparisons with reported values [9,11,12,13,14]. …”

“…The quaternary carbons C-1, C-3, C'-1, C'-3, C'-4, C'-5, and C''-1 are readily identified since they are less intense and almost invariant in position compared with other signals, as a result of long relaxation times of the quaternary carbons [9,15]. …”

“…Organotins have been used in industrial and agricultural applications [5,6], as plastic stabilizers and catalysts, antifouling paints, molluscicides, fungicides [7] and disinfectants [8]. The introduction of biocidal organotin groups into phosphorous compounds could possibly enhance their biocidal activities [9]. The present study aimed to develop a new technique for the preparation of a new organotin substituted α-anilinomethylphosphonates.…”