01155nas a2200241   4500008004100000022001400041245007400055210006900129260008600198300001400284490000700298520033600305653001900641653001600660653000800676653000900684100002500693700001400718700002300732700002600755700002800781856010400809       2014                        eng d  a0039-791100aNucleophilic ring-opening of benzoxazinones by dbu: some observations0 aNucleophilic ringopening of benzoxazinones by dbu some observati  a530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcAUG  a2955-29600 v443 a<p>This communication demonstrates the formation of an unusual nucleophilic ring opening of benzoxazinones by 1,8-diazabicycloundec-7-ene (DBU). This observation contradicts the intrinsic feature of a hindered nonnucleophilic base like DBU. Confirmation of the product was achieved via single-crystal X-ray diffraction studies.</p>10aBenzoxazinones10acaprolactam10aDBU10aHATU1 aBaravkar, Sachin, B.1 aRoy, Arup1 aGawade, Rupesh, L.1 aPuranik, Vedavati, G.1 aSanjayan, Gangadhar, J.  uhttps://library.ncl.res.in/content/nucleophilic-ring-opening-benzoxazinones-dbu-some-observations-0