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Beilstein J. Org. Chem. 2022, 18, 286–292, doi:10.3762/bjoc.18.32
Graphical Abstract
Figure 1: Some bioactive 3,4-dihydroquinazolines and 4H-3,1-benzothiazines.
Scheme 1: Representative preperation of 3,4-dihydroquinazolines and 4H-3,1-benzothiazines.
Scheme 2: Preparation of 3,4-dihydroquinazoline 8a.
Scheme 3: Preparation of 3,4-dihydroquinazolines 8.
Scheme 4: Preparation of 4H-3,1-benzothiazines 11.
Beilstein J. Org. Chem. 2008, 4, No. 49, doi:10.3762/bjoc.4.49
Scheme 1: Preparation of iminophosphorane 3.
Scheme 2: Preparation of 2-(dialkylamino)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-ones 6.
Scheme 3: Preparation of 2-alkylamino-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-ones 8.