Cycloids containing oxygen. 815 



1912 



1912 CYCLOIDS WITH TWO 

 ATOMS OF OXYGEN IN THE 

 RING. 



GENERAL. 



Barbier et Sislej. Synthese de I'anili- 

 dophenosafranine symetriqiie phenylee. 

 C.R.,145, (1185J. 



BischofiF. Ringester aus Aetlivlengly- 

 kol und aus Glycerin. B., 40, (2803). 



Pauly. Ueberfiihrung von Piperonal 

 in den cvclischen Kohlensaureester des 

 Protocatechualdehyds. B., 40, (3096). 



11. Neiikam. Der cyclische 



Kohlensaureester des Vinylbrenzcate- 

 chins. B., 40, (3488). 



SPECIAL. 



CYCLOIDS WITH TWO OXYGEN 



ATOMS. 



CYCLOID C7H3O2 



Methylene ether of pyro catechol 



<-'5H4<|j>CH2 



Medinger, P. il., 27, (237). 

 CYCLOIDS C9H1&O2 



Dimetliylethylenepyrone 



CH, 



C 



- .C.CMe ^ 



CH, 

 CH, 



-0- )0 



CHj \C:CMe/ 



and its hydrochloride and jdatini- 

 chloriihi. 



Bain, A. W. J.C., 91, (544). 

 Compound 



_ C CMe. 



Cf >0 



— \CH.C(:CHj)/ 



Bain. [Compound, CgHioO,, formed 

 by] the action of ethylene di bromide . . . 

 on the dibodiurn derivative of diacetyl- 

 acetoue. J.C, 91, (544). 



HOMOPIPEUONYLAMINE 



CH2 : O2 : C6H3.CH2.CIi2.NH2 

 Medinger, P. M., 27, (237). 



CYCLOID C,oH,202 



Compound 



CHMe— ^C CMe ^ 



I C< - — >0 



CHj \CH.C(: CH2)/ 



Bain. [Compound, CjoHj202, formed 

 by] the action of . . . propylene dibro- 

 mide on tlie disodium derivative of 

 diacetylaoetone. J.C., 91, (544). 



C6H,< 



CYCLOID C12H24O2 



Dihexylene dioxide 



.-^CHEt.CHMe.CH2. ,^ 

 ^^CH^.CHMe.CHEt^^ 



Munk, J. M., 26, (603). 



CYCLOID C26H13O2 



Dixanthyl 



0<§H.>CH.CH<CeH.>o 



Fosse, R. BL, 35, (1005). 



CYCLOIDS WITH THREE OXYGEN 

 ATOMS. 



CYCLOID CgHsOs 



Vinylpjncocatechyl carbonate 



C0<[^>CeH3.CH : CH, 



PatUy u. Nenkam, K. B., 40, (3488). 



CYCLOIDS CjHsOs 



Pyrocatechol-a-oxypropionic acid 

 lactone 

 ,oco 



'O.CHMe 

 Bischoff u. FroMich, E. B., 40, (2779). 



Homopiperonylic aldehyde 



CH^: O2 : C6lI3.CH2.CHO 

 OxiUE. Acetyl derivative of liie o.\inie. 

 Medinger, P. M., 27, (237). 



CYCLOID CgHioOs 



Homopiperonyl alcohol 



ClIjiOj rColIj.CHi.CH,. OH 

 Medinger, P. M., 27, (237). 



CYCLOID C -H20O3N2 



Dixanthylurea 

 (o<[;;[|;>cu.nh)2CO 



and the tuio derivativi-; 

 (O: (05114)2 :CH.NH),CS 



Fosse, R. C.U., 145, (813). 



CYCLOIDS WITH FOUR OXYGEN 

 ATOMS. 



CYCLOID C.H,04 



Glycerine oxyacetic acid lactone 

 HO.CHj.CH<[^'^'J5q>CH2 or 



,CH2.0 

 'O. CH/ 

 ii., 40, (^28t)3). 



H0.CH2.CH<; 

 Bischoff, C. A. 



>C0 



