206 D. L.McDONALD, H. 0. L. FISCHER VOL. 12 (1953) 



REFERENCES 



1 H. Appel, /. Chetn. Soc, (1935) 425. 



2 L. V. Vargha, Ber., 68 (1935) 18, 1377. 



3 R. A. Weermann, Rec. trav. chini., 37 (191 7) 16. 



* O. Ruff, Ber., 31 (1898) 1573; 32 (1899) 550, 3672; 34 (1901) 1362; O. Ruff and G. Ollendorff, 



Ber., 33 (1900) 1798. 

 s /. Am. Chem. Soc, 73 (1950) 4546. 

 6 A. WoHL, Ber., 26 (1893) 730; A. Wohl and E. List, Ber., 30 (1897) 3101 ; A. Wohl, Ber., 32 (1899) 



3666. 

 ■^ G. Zemplen AND D. Kiss, Ber., 60 (1927) 165; V. Deulofeu, /. Chem. Soc. (1930) 2602; R. C. 



HocKETT, V. Deulofeu, A. L. Sedoff amd J. R. Mendive, /. Am. Chem. Soc., 60 (1938) 278. 

 ^ A. Wohl and O. Wollenberg, Ann., 500 (1932) 2S1. 

 9 Ber., 83 (1950) 559- 

 1" D. L. MacDonald and H. O. L. Fischer, /. Am. Chem. Soc, 74 (1952) 2087. 



11 E. Rothstein, J. Chem. Soc, (1940) 1560. 



12 E. Fischer, Ber., 27 (1894) 673. 



1^ L. F. FiESER, Experiments in Organic Chemistry, 2nd Edition, Heath and Co., New York, N.Y., 



1941, p. 368. 

 I'l J. d'Ans and W. Frey, Ber., 45 (1912) 1845. 



Received April 20th, 1953 



