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2005
Fused pyridine derivatives
R 0450
Photochemical Synthesis of Benzoxazolo[3,2-b]isoquinolin-11-one and Isoquinoliunder Basic Conditions. — The isoquinoline pre34- 203 no[3,2-b][1,3]benzoxazin-11-one
cursors are prepared under solvent-free, solid-supported microwave conditions. Compared to the synthesis in refluxing high-boiling solvents, comparable yields are
achieved in drastically reduced reaction times (25-30 min compared to 22-24 h). Irradiation of the isoquinolines in the presence of aq. NaOH results in formation of the target compounds. — (SENTHILVELAN, A.; THIRUMALAI, D.;
RAMAKRISHNAN*, V. T.; Tetrahedron 61 (2005) 17, 4213-4220; Dep. Org. Chem.,
Univ. Madras, Madras 600 025, India; Eng.) — Klein
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