water; Pseudomonas lipase enzyme in tetrahydrofuran 0.05 M aq. phoshate buffer (pH 7.0), at pH 8.0 (0.1 N aq. NaOH solution); Yield given. Yields of byproduct given. Title compound not separated from byproducts;

sulfuric acid 2 h; Heating; Title compound not separated from byproducts;