Cycloids containing oxygen. 



877 



1916 



Compounds PO(^O.C5H302')3 ; 

 HO.PO(OC5H302)2aq ; (HO)2PO(,C5H302) 



Chavanne, G. Pentachloruie de phos- 

 pli( ire sur I'acide isopvronuicique. Paris, 

 Bui. soc. chim., (ser." 3), 29, 1903, (396- 

 400). 



Acetyl debivative ACO.C5H3O.2 



Benzoyl derivative BZO.C5H3O2 



Pyromucyi, derivative 



C4H30.CO:O.C5H302 



Chavanne, G. Paris, Bui. soc. chim., 

 (ser. 31, 29, 1903, (400-i03). 



PhenijlJtydrazine and h)jdroj;yIam')ne 

 salts. 



Chavanne, G. Paris, Bui. soc. chim., 

 (ser. 3), 29, 1903, (403-407). 



Bromoisopyrojilxic acid CjHjBrOj 

 And its acetyl derivative CsHjAcBrOj 



benzoyl derivative CsHjBzBrOj 



Also its i)henylhydrazine and hydroxyl- 



amine salts. 



Chavanne, G. Paris, Bui. soc. chim., 

 (ser. 3), 29, 1903, (403-407). 



CYCLOID C5H8O3 



a-Oxyvalerolactone 

 ^,jj .CH,OH;.CU 

 ^ ^^^<CHMe . O 



And ISnoXYVALEROLACTOXE. 



Fittig, R. mid Lepere, E. Liebiors 

 Ann. Chem., Leipzig, 334, 1904, (85- 

 101). 



CYCLOID CeHeOi 



Triacetic acid lactone 



C-Carbanilidu derivative 



CMe<*^Q^Q>CH.CO.NHPh 



Dieckmann, W. und Breest, F. Berlin, 

 Ber. 1). (hem. Ges., 37, 1904, (3387- 

 3392). 



CYCLOIDS CeH, O3 



Oxyheptolactone 



and its acetyl derivative. 



Glaser, E. Wien, MonHfte Chem., 

 25, 1904, (46-54). 



Diglycide ether 

 [ch4-"--]0 



Nef, J. U. Lieljigs Ann. Chem., 

 Leipzig, 335, 1904, (191-245). 



a and ;3-Acrolein-glycerin 

 CH2.CH2.0.CH2 

 ,0 -CH 



CH< 



0- 



-CH, 



Nef, J. U. Liebigs Ann. Chem., Leip- 

 zig, 335, 1904, (191-245). 



CYCLOID C7H6O3 



Furfurylidene-acetic acid 



C4H3O.CH : CH.CO2H 



BeNZOYLAMINOFURFDRYLIDENE-ACETIC ACll) 



CuHiiO^N i.e. 

 C4H3O.CH : C(C02H).NH.CO.C6H5 



And the esters, amide, imide and 

 jjiperidide. 



Erlenmeyer, E. jun. und Stadlin, W. 

 Liebigs Ann. Chem., Leipzig, 337, 1904, 

 (283-293). 



CYCLOID C7Hi03 



1,4-Diinethylfurane carboxylic acid 



Etiivl ester 

 C(C02Et) : CMe, 



CH: 



-CMe 



>0 



Korscliun, G. Berlin, Ber. D. chem. 

 Ges., 37, 1904,(2183-2192). 



CYCLOID CHioOs 



Valactenpropionic acid 



CIL.CIL 



>C : ClI.CHj.CO^II 



CHMe.O ■ 



Fittig, R. Liebigs Ann. Chem., Leip- 

 zig, 331, 1904, (151-196). 



CYCLOID CHsOs 



Oxocoumarin C6H4< ". 



Erlenmeyer, E. jun. und Stadlin, \V. 

 Liebigs Ann. Chem., Leipzig, 337, 1904, 

 (283-293). 



