Navigation

0 Hits

  • Previous / Next

You are using Science Of Synthesis as a Guest.
Please login or sign up for a free trial to access the full content.
16.22.4.1.1.1.2.1 Variation 1: From 5-Amino-2,6-dihydroxypyrimidine-4-carboxylic Acid

DOI: 10.1055/sos-SD-016-01695

Ishikawa, T.Science of Synthesis, (2004161370.

Reaction of 5-amino-2,6-dihydroxypyrimidine-4-carboxylic acid with urea gives pyrimido[5,4-d]pyrimidine-2,4,6,8-tetrol (106) (Scheme 74).[‌128‌]

Meeeee 88 Meeeeeee[8,8-e]eeeeeeeeee-8,8-eeee Meeeee eeee 8-Meeee-8,8-eeeeeeeeeeeeeeeeeee-8-eeeeeeeeee Meee eee Meee[‌888‌]

8-Meeeeeeeeeeee ee 8-eeeeeeeeeee eeeeeeee[8,8-e]eeeeeeeeee-8,8,8-eeeee ee eeeeeeee ee eeeeeeee ee eeee eeeeee ee eeeeeeee ee e 8-eeeee-8,8-eeeeeeeeeeeeeeeeeee-8-eeeeeeeeee eeee eeeeeeeeee eeee eeeeeeeeeeeee eeeeeee eeeeeeee ee eeeeeeeee eeee ee eeeeeeeeeee eeeee.[‌888‌] Meee, eeeeeeee[8,8-e]eeeeeeeeee-8,8,8-eeeee (888) ee eeeeeeee ee 88% eeeee (Meeeee 88).

Meeeee 88 Meeeeeee[8,8-e]eeeeeeeeee-8,8,8-eeeee eeee Meeee 8-Meeee-8,8-eeeeeeeeeeeeeeeeeee-8-eeeeeeeeeee[‌888‌]

Meeeeeeeeeee Meeeeeeee

Meeeeeee[8,8-e]eeeeeeeeee-8,8,8,8-eeeeee (888); Meeeeee Meeeeeeee:[‌888‌]

Me e eeee ee eeee ee 888888°M eee eeeee eeeeee eeeeeeee 8-eeeee-8,8-eeeeeeeeeeeeeeeeeee-8-eeeeeeeeee eeee (88.8e, 8.8eee) eeee eeeeeeee. Mee eeeeeee eee eeeeeee eee 88 eeee eeeee eee eeee eeeeeeeeee eee eeee eee eee eeee ee 888°M eeeee eeeee eeeeeee (<88 eeee). Meeee eee eeeeeeee ee 8M MeMM (888eM), eee eeeeeeeee eeeeeeeeee eee eeeeeeee eee eeeeee. Mee eeeeeeeee eeeeee eeee eee eeeeeeeee ee eeeeeeeeee eee eeeeee eeee e eeeee eeeeee ee M8M. Meeeeeeeeeee ee eee eeee ee M8M eeeeeeee ee eeeeeeeeeeeee eeee MeMM eeeeeeee eee eeeee eeeeeeee; eeeee: 88e (88%).

References


Cookie-Einstellungen