Benzofuran derivatives. I. On the effects of substituents in benzofuran syntheses.

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~2%

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~%

~92%

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~%

~%

~53%

~%

~94%

~%

~%

~%

~%

~%

~82%

~25%

~88%

~%

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~%

~%

~%

~23%

~27%

~%

~94%

~84%

~91%

~%

~65%

~%

~9%

~35%

~%

~92%

~%

~80%

~%

~97%

~54%