Photochemical Synthesis of 3-Alkynals from 1-Alkynoxy-9,10-anthraquinones
摘要:
Photolysis of 1-(3-alkynoxy)-9,10-anthraquinones in deoxygenated methanol leads to moderate yields (35-45%) of 3-alkynals along with the unexpected formation of diacetals. Reaction of these 3-alkynals with Grignard and Wittig reagents occurs nearly quantitatively without rearrangement to their 2,3-dienal isomers.
Photochemical Synthesis of 3-Alkynals from 1-Alkynoxy-9,10-anthraquinones
作者:Ronald L. Blankespoor、Peter J. Boldenow、Eric C. Hansen、Jeffrey M. Kallemeyn、Andrew G. Lohse、David M. Rubush、Derek Vrieze
DOI:10.1021/jo900298y
日期:2009.5.15
Photolysis of 1-(3-alkynoxy)-9,10-anthraquinones in deoxygenated methanol leads to moderate yields (35-45%) of 3-alkynals along with the unexpected formation of diacetals. Reaction of these 3-alkynals with Grignard and Wittig reagents occurs nearly quantitatively without rearrangement to their 2,3-dienal isomers.