Cycloids containing sulphur. 54;" 



1920 



1912 CYCLOIDS WITH TWO 

 ATOMS OF OXYGEN l.\ THE 

 RING. 



Fries, Hasselbach a. Schrttder. 1 1 1064. 

 I sindigo. 



SPECIAL. 



OIDS WITH FOUR OXYGEN 

 MOMS. 



CYCLOID CH12O4 



Dimethylisobutyrolactone spiran 



7-1 'l I I.i (ROM i:ill Yl.^'-M Kill JLI80BUTYR0- 

 LAOTONE B-SPIKAN 



CH 2 Cl.CH<i ) 5?>C< CH2 -9 HMe 



^o.co co 



And its y'-OBXORO- ami -y'-BBOMO 

 DERIVATIVES. 



Leuchs u. Lemcke. B., 47, 2573 

 CYCLOID C 19 Hi 2 4 



Phthalidene-7 v tolylbutenolactone 



C0< C e H 4>C:C< CH:C.C 8 H 4 Me 



u CO.O 



i 111 IHTIlALIDENE-METHOXYSTYKYI.BU ENO- 

 LAOTONE. 



Borsche. B., 47, (2708). 



1920 CYCLOIDS CONTAINING 

 SULPHUR. 



Engelbertz. 110076. Chinoide Ver- 

 ! nlungen in der Thianthrenreihe. 



Friedlander u. Risse 111042. Indigo- 

 a liiliche Farbstoffe. 



Hinsberg. L11847. Trimethylentri- 



su Hid unci seine < >xyde. 



Johnson. Moran & Kobmann. 1 1 21 1U. 

 1 . 1 dithienes. 



Rubemann. L14676. Naphthothio- 



flavone. 



Sachs u. Oholm. L14729. Kondensa- 

 tiunen der L2-Naphthochinonsulfo 

 (4). I\". Oxy-thionaphthen and Kluoren 



Steinkopf. 115302. Darstellnng von 

 Thiophen aus Acetylen ; Uberfuhrung 

 homologer Butadiene in bounologe Thio- 

 phene ; 2-Thiophenin ; Pyridino-2,3- 

 thiophen ; Quecksilberchloridthiophene. 

 115303: Kondensatimi von Thiophen 

 mil Phthalsaureanhydrid. 



Stolid. 1 15370. Methylthionaphthen- 

 chinon. 



(d-9012) 



CH 3 .CO.C<C 



CYCLOIDS CONTAINING ONE 

 SOLPHl i: ATOM. 



CYCLOID C4H4S 



Thiophene 



2-Aminotbiopheni 



s ('II cil 



C(NH,):CH 



2-Thiophenine 



And 2-Methylaminothiophene 



C 4 H 3 S.NHMe 



Steinkopf. A., 403, (29). 



CYCLOID C e H 6 0S 



2-Acetothienone 



en en 

 rii 



Steinkopf u. Bauermeister. A.. 403, 

 69). 



CYCLOID CH0S 

 Methylthionaphthenequinone 

 MeC 6 H 3 < C °>CO 

 Stolid. B., 47, (1130). 



CYCLOID CnHsOS 



Phenyl 2-thienyl ketone 

 C 6 H 5 .CO.C 4 H 3 S 



Also 0- and p-tolyl thienyl ketone. 

 Steinkopf u. Bauermeister. A., 403, 



(70). 



CYCLOID Ci 2 H 8 2 S 



Thiophanthraquinone 

 C 8 H 4 <gg>C 4 SH 2 



Steinkopf. A., 407, (94). 



CYCLOID C 12 H 3 3 S 



Thienoylbenzoic acid 

 C 4 SH 3 .CO.C„H 4 .C0 2 H 



Steinkopf. A., 407, (94). 



CYCLOID CisHioOaS 



i'-0xy-i ; 4-naphthaquinone- 

 -'-thionaphthene-indigo. 

 Sachs u. Obolm. IS.. 47, (955 . 



CYCLOID Ci 9 Hi 2 0S 



o- and S-Naphthathioflavone 

 C 10 H,< C °CB 

 S— CPh 

 Ruhemaun. B., 47, (123). 



2 n 2 



