Chapter 4 - Synthesis of Other Isocoumarin Derivatives

Add time:08/26/2019    Source:sciencedirect.com

Various derivatives and analogs of isocoumarins, including benzo-fused isocoumarins, thiaisocoumarins, telluroisocoumarins, hydrazinoisocoumarins, in addition to the α-pyranone fused with heteroaryl ring are known. The strategies and approaches used for the synthesis of isocoumarins were also explored for the synthesis of other isocoumarin derivatives. Thus apart from traditional methods the alkyne-based methodologies generally catalyzed by transition metal complexes or salts have been used to prepare these compounds. Indeed, similar strategies based on coupling/cyclization initially and then C–H activation/cyclization have been explored for the synthesis of thiaisocoumarins, phosphaisocoumarins, and α-pyranone fused with heteroaryl ring. Some of these syntheses are presented in this chapter.

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