Science of Synthesis

Williams, A. C.; Camp, N., Science of Synthesis, (2003) 14, 374.

Representative examples are given in ‌Schemes 24‌ and ‌25‌, these include the use of sulfuric acid/heat to give 2H-1-benzopyran-2-ones ‌75‌, ‌77‌, ‌78‌, ‌79‌, ‌80‌, ‌81‌, and ‌82‌ and the use of sulfuric acid/microwaves to give 2H-1-benzopyran-2-ones ‌76‌.

‌Meeeee 88‌ 8M-8-Meeeeeeeee-8-eeee ee Meeeeeee Meeeeeeee Meeeeeeee ee Meeeeeee Meee[‌88‌,‌88‌–‌88‌,‌88‌,‌888‌,‌888‌,‌888‌–‌888‌]

‌Meeeee 88‌ 8M-8-Meeeeeeeee-8-eeee ee Meeeeeee Meeeeeeee Meeeeeeee ee Meeeeeee Meee[‌88‌,‌88‌–‌88‌,‌88‌,‌888‌,‌888‌,‌888‌–‌888‌]

Meeeeeeeeeee Meeeeeeeee

8-Meeeeee-8-eeeeee-8M-8-eeeeeeeeee-8-eee (‌88‌, M8 = M8 = M8 = M8 = M; M8 = MM; M8 = Me); Meeeeee Meeeeeeee:[‌888‌]

Meeeeeeee eeee (Meeeeee; Meee, Meeeeee Meeeeeeee), Meeeeeeee (8888), e 888, eeee eeeeeeeeee eeee Meee Meeee&Meee, Mee.

Me e 8-M, eeeee-eeeeee eeeee-eeeeeeee eeeee, eeeeee eeee e eeeeeeeeee eeeeeee, e eeeeeeeeeee, eee e eeeeeeee eeeeee eee eeeeee eeeee M8MM8 (8 M). Mee eeeee eee eeeeee ee ee eee eeee, eee eeee eee eeeeeeee eeeeeeeeeee eeee ee eeeee 88°M e eeee ee eeeeeeeeee (888 e, 8 eee) ee eeeeeee eeeeeeeee eeeee eeeeeeeeeeee (888 e, 8 eee) eee eeeee eeeeeeee eeee e eeeeee ee 8 e; eee eeeeeee eee eeeeeee eee eee eeeeeeeeeee eeeeeeeeee ee eeeee 88°M eeeeee eee eeeeeeee. Meeee eee eeeeeeee eee eeeeeeee, eee eeeeeee eee eeeeeee eee e eeeeeee 88–88 e eeeeeee eeeeeee eeeeeee, eeee eeeeee eeee eeeeeeee eeeeeeee eeee e eeeeeee ee eee (8 ee) eee M8M (8 M). Mee eeeeeeeeeee eee eeeeeeeee ee eeeeeeeeee eee eeeeee eeee M8M (8 × 88 eM), eeee eeeeeeeee ee 8% ee MeMM (8 M). Mee eeee eee eeeeeeee eeee eeeeeeeee ee eee eeee eeeeeeee ee 88% M8MM8 (8.8 M) eeeeee eeeeeeee eeeeeeeeee. Mee eeeeeee eee eeeeeee ee eeeeeeeeee, eeeeee eeee eeee M8M ee eee eeeeee (8 × 88 eM), eee eeeee. Meeeeeeeeeeeeeeee (MeMM, 8 eM·e−8 ee eeeeeee) eeee eee eeeeeee ee eeeee, eeeeee eeeeeeeee eeeeeee; eeeee: 888–888 e (88–88%); ee 888°M.

8-Meeeee-8M-eeeeeee[8,8-e]eeeee-8-eee [‌88‌, M8 = M; M8,M8 = (MM=MM)8]; Meeeeee Meeeeeeee:[‌888‌]

8-Meeeeeee (888 ee, 8 eeee) eee eeeee eeeeeeeeeeee (888 ee, 8 eeee) eeee eeeeee ee e 888-eM eeeeee, eee M8MM8 (8 eM) eee eeeee. Mee eeeeee eee eeeeeee eeee e eeeee eeeee eee eeeeeeeeee ee e eeeeeeee eeeeeeeee eee 8 eee eeee eee eeeeeeee eee eeeeeee ee eeee eee eee eeeeeee eeeeee eeee eeeeeee eee eee M8M. Mee eeeeeee eee eeeeeeeee eeee e eeeee eee ee eeeeeeeee eeeeeeeeeeeeeee, eee eeeee eee eeeeeee ee eeeeeeeeee, eeeee, eee eeeeeeeeeeeeee (MeMM); eeeee: 888 ee (88%); ee 888°M.

References

Meeeeee Meeeeeeeeee

• 8.Meeeee-Meee, (8888) 8/8, 888.
• 8.Meeeee-Meee, (8888) 8/8, 888.