1. For leading references, see:
2. aFurukawa, A., Fukuzaki, T., Onishi, Y., Kobayashi, H., Matsufuji, T., and Honda, T.WO 2010082601, July 22, 2010.
3. bHarris, J. M., Neustadt, B. R., Stamford, A., and Liu, H.WO 2010075271, July 1, 2010.
4. cSmith, N. D., Bonnefous, C., Kahraman, M., Noble, S. A., Payne, J. E., and Govek, S. P.WO 2010048149, April 29, 2010.
5. Hetero-Diels–Alder reaction of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with arylsulfonylcyanides. Synthesis and antimicrobial activity of 4-hydroxy-2-(arylsulfonyl)pyridines