1. 1) Otera, J.; Nishikido, J. Esterification: Methods, Reactions, and Applications, 2nd ed., Wiley-VCH, Weinheim, Germany (2009).
2. 2) Smith, M. B.; March, J. Advanced Organic Chemistry, 5th ed., Wiley, New York (2001).
3. 3) Larock, R. C. Comprehensive Organic Transformations, 2nd ed., Wiley-VCH, New York (1999).
4. 4) For example, Haslam, E. Recent developments in methods for the esterification and protection of the carboxyl group. Tetrahedron 36, 2409-2433 (1980).
5. 5) Some selected reports: ref 5)-20). Dighe, S. N.; Bhat tad, R. V.; Kulkarni, R. R.; Jain, K. S.; Srinivasan, K. V. A rapid and facile esterification of Na-carboxylates with alkyl halides promoted by the synergy of the combined use of DMSO and an ionic liquid under ambient conditions. Synth. Commum. 40, 3522-3527 (2010).