Synthetic Communications p. 105 - 110 (1995)
Update date:2022-08-03
Topics:
Torres
Vazquez
Gonzalez
Photochromatic derivatives 1,3,3-trimethylindoline-2-spiro-2'-benzopyran, were synthesized using ultrasound as energy source (55 watt), reaction times are between 10 to 20 min, obtaining higher or slightly lower yield than the conventional reported methods.
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