References
- Kolomnikova , G. D. and Parnes , Z. N. 1967 . 36 : 735
- Nozoe , T. 1961 . Progr. Org. Chem. , 5 : 132
- Doering , W. V. E. and Krauch , H. 1956 . Angew. Chem. , : 661
- Conrow , K. 1963 . Org. Syn. , 43 : 101
- Conrow , K. 1969 . J. Am. Chem. Soc. , 81 : 5461
- Doering , W. V. E. and Knox , L. H. 1957 . J. Am. Chem. Soc. , 79 : 352
- Boulton , J. J. and Ellinger , L. P. British Patent . 1,134,736 . November, 1968 . Chem. Abstr., 70, 29545n (1969)