申请人:E. I. du Pont de Nemours and Company
公开号:US06166208A1
公开(公告)日:2000-12-26
This invention provides advantageous processes for preparing quinazolinones of Formula I ##STR1## wherein: R.sup.1 is C.sub.1 -C.sub.10 alkyl; C.sub.3 -C.sub.10 alkenyl; C.sub.3 -C.sub.10 cycloalkyl; C.sub.3 -C.sub.10 halocycloalkyl; C.sub.4 -C.sub.10 cycloalkylalkyl; C.sub.4 -C.sub.10 halocycloalkylalkyl; or C.sub.3 -C.sub.10 alkynyl; R.sup.2 is C.sub.1 -C.sub.10 alkyl; C.sub.3 -C.sub.10 alkenyl; C.sub.3 -C.sub.10 cycloalkyl; C.sub.3 -C.sub.10 halocycloalkyl; C.sub.4 -C.sub.10 cycloalkylalkyl; C.sub.4 -C.sub.10 halocycloalkylalkyl; C.sub.4 -C.sub.10 cycloalkyl; C.sub.4 -C.sub.10 halocycloalkyl; or C.sub.3 -C.sub.10 alkynyl; and R.sup.3 and R.sup.4 are each independently hydrogen or halogen; from compounds containing the moiety IIg ##STR2## This invention further provides certain compounds of Formula II, IIIa, or IVa ##STR3## where R.sup.7 is C.sub.2 -C.sub.6 alkyl.
这项发明提供了制备式I的喹唑啉酮的有利过程,其中:R.sup.1为C.sub.1-C.sub.10烷基;C.sub.3-C.sub.10烯基;C.sub.3-C.sub.10环烷基;C.sub.3-C.sub.10卤代环烷基;C.sub.4-C.sub.10环烷基烷基;C.sub.4-C.sub.10卤代环烷基烷基;或C.sub.3-C.sub.10炔基;R.sup.2为C.sub.1-C.sub.10烷基;C.sub.3-C.sub.10烯基;C.sub.3-C.sub.10环烷基;C.sub.3-C.sub.10卤代环烷基;C.sub.4-C.sub.10环烷基烷基;C.sub.4-C.sub.10卤代环烷基烷基;C.sub.4-C.sub.10环烷基;C.sub.4-C.sub.10卤代环烷基;或C.sub.3-C.sub.10炔基;而R.sup.3和R.sup.4各自独立地为氢或卤素;从含有基团IIg的化合物中。此外,该发明还提供了式II、IIIa或IVa的某些化合物,其中R.sup.7为C.sub.2-C.sub.6烷基。