Condensation of imines with homophthalic anhydrides. A convergent synthesis of cis- and trans-13-methyltetrahydroprotoberberines.

@article{Cushman1977CondensationOI,
  title={Condensation of imines with homophthalic anhydrides. A convergent synthesis of cis- and trans-13-methyltetrahydroprotoberberines.},
  author={Mark Cushman and Jeff Gentry and F W Dekow},
  journal={The Journal of organic chemistry},
  year={1977},
  volume={42 7},
  pages={
          1111-6
        }
}