Patent ID: 6150537
Filing Date: 2000-11-21
Classification: C07C,C07D

Abstract:
A method for preparing an ester, comprising admixing a compound having the structure VII: ##STR73## wherein, R.sub.15 and R.sub.16 are, independently, hydrogen, Si(R.sub.21).sub.3 or C(O)R.sub.22, wherein each R.sub.21 is, independently, branched or straight chain C.sub.1 -C.sub.12 alkyl; and R.sub.22 is substituted or unsubstituted aryl, aralkyl or from C.sub.1 -C.sub.12 branched or straight chain alkyl;R.sub.17 is substituted or unsubstituted aryl, aralkyl, or from C.sub.1 -C.sub.12 branched or straight chain alkyl;R.sub.18 is hydrogen; branched or straight chain C.sub.1 -C.sub.12 alkyl; unsubstituted or substituted aryl; aralkyl; Si(R.sub.28).sub.3 or C(O)R.sub.29, wherein, each R.sub.28 is, independently, branched or straight chain C.sub.1 -C.sub.12 alkyl; or aralkyl;R.sub.29 is substituted or unsubstituted aryl, aralkyl or from C.sub.1 -C.sub.12 branched or straight chain alkyl;R.sub.19 and R.sub.20 are, independently, branched or straight chain C.sub.1 -C.sub.12 alkyl, aryl, aralkyl, or C(O)OR.sub.30 ;R.sub.30 is branched or straight chain C.sub.1 -C.sub.12 alkyl; andV and W are, independently, sulfur, oxygen, or NR.sub.43, wherein R.sub.43 is hydrogen; branched or straight chain C.sub.1 -C.sub.12 alkyl; or aralkyl,with an alkoxide.