3-(2,3,4-Trimethoxyphenyl)-2-propenoic acid → 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-8-(2-(2,3,4-trimethoxyphenyl)ethenyl)-, (E)-

Participants

Reaction Steps

Substantially the same procedure as in Reference Example 1 was repeated using 2.00 g (8.85 mmol) of 5,6-diamino-1,3-dipropyluracil and 2.32 g (.9.73 mmol) of 2,3,4-trimethoxycinnamic acid. Then, the resultant crude crystals were recrystallized from 2-propanol/water to give 1.84 g (yield 49%) of Compound 20 as pale yellow needles.

Provenance & Evidence