... (9) For a review of the Henry reaction, see: Baer, HH; Urbas, L. In The Chemistry of the Nitro and ... The organic layer was dried (NaZSOd and filtered, and the filtrate was concentrated in uucuo. ... Pure 10 (40 mg, 72%) was Page 3. Notes J. Org. Chem., Vol. 60, No. 15, 1995 4945 ...