Patent ID: 6184403
Filing Date: 2001-02-06
Classification: C07F,Y10S

Abstract:
A compound of formula I: ##STR18##whereinR.sup.1 is C.sub.2 or higher alkyl, substituted alkyl, haloalkyl, cycloalkyl, C.sub.10 or higher aryl, substituted aryl, heteroaryl, arylalkyl, alkoxy, acyl, alkyl carboxylate, aryl carboxylate, alkenyl, alkynyl, or E.sup.2 (R.sup.6)(R.sup.7)(R.sup.8);R.sup.2 is H, halogen, nitro, or haloalkyl;E.sup.1 and E.sup.2 are independently Si, Ge, Sn, or Pb;R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently chosen from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl, arylalkyl, alkoxy, alkenyl, alkynyl or R.sup.4 and R.sup.5, or R.sup.7 and R.sup.8 taken together form a divalent alkyl radical;Y and Z are independently O, S or NR.sup.9 ; andR.sup.9 is alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl, heteroaryl, arylalkyl, alkoxy, alkenyl, or alkynyl.