Chapter 2B L-proline catalysed synthesis CHAPTER 2B L-proline as an efficient asymmetric induction catalyst in the synthesis of chromeno[2,3-d]pyrimidine-triones, xanthenes in water # # Deboshikha Bhattacharjee, Dipankar Sutradhar , Asit K. Chandra and Bekington Myrboh*, Tetrahedron 2017, 73, 3497.