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Beilstein J. Org. Chem. 2020, 16, 1947–1954, doi:10.3762/bjoc.16.161
Graphical Abstract
Figure 1: Structure of ritanserin and setoperone drugs.
Scheme 1: One-pot synthesis of 5(7)-oxothiazolopyrimidine-6-carbonitriles.
Scheme 2: Synthesis of thiazolopyrimidine-5-ones through the reaction of 2-aminothiazoles with ethyl acetoace...
Scheme 3: Synthesis of 2-(benzo[d]thiazol-2-yl)-2-(7-R-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)acetonitriles.
Scheme 4: Synthesis of 3-acyl-7-methyl-5H-thiazolo[3,2-a]pyrimidin-5-ones.
Scheme 5: Sonogashira coupling reaction of 6-amino-2-thiouracil with propargyl bromide.
Scheme 6: Reactions of 6-substituted 2-thiouracils 1a,b with chloroethynylphosphonates 2a–c.
Scheme 7: Reaction of 5-methyl-2-thiouracil (1c) with chloroethynylphosphonates 2a–c.
Scheme 8: Reaction of 2-thiouracil (1d) with chloroethynylphosphonates 2a–c.
Scheme 9: Reaction of 6-trifluoromethyl-2-thiouracil (1e) with chloroethynylphosphonates 2a–c.
Scheme 10: A plausible mechanism of the reaction between 6-trifluoromethyl-2-thiouracil (1e) and chloroethynyl...
Beilstein J. Org. Chem. 2019, 15, 1563–1568, doi:10.3762/bjoc.15.159
Scheme 1: Synthetic approaches to [1,2,4]triazolo[4,3-a]pyridines.
Scheme 2: Synthesis of 3-methylphosphonylated [1,2,4]triazolo[4,3-a]pyridines. Reaction conditions: 1 (1 mmol...
Scheme 3: Synthesis of methylphosphonylated 6(8)-nitro-[1,2,4]triazolo[4,3-a]pyridines and 6(8)-nitro-[1,2,4]...
Scheme 4: Acid-promoted Dimroth rearrangement pathway.
Scheme 5: Synthesis of phosphonylated [1,2,4]triazolo[4,3-a]quinolines and [1,2,4]triazolo[3,4-a]isoquinoline...
Scheme 6: Plausible reaction pathway.