1,2,3-Thiadiazoles
TL;DR: In this paper, new developments in the field of 1,2,3-thiadiazoles have been reported along with new reactions of both the fully aromatic and reduced ring systems.
Abstract: This chapter deals with new developments in the field of 1,2,3-thiadiazoles updating the second edition covering the period 1996 to 2006. Developments in structure determination, especially X-ray structures, have been reported along with new reactions of both the fully aromatic and reduced ring systems. A new method for the preparation of 1,2,3-thiadiazoles has been included as well as recent examples of the more established methods.
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TL;DR: The compounds 3f, 3g, 4f &4g were found to be significantly active against the tested microorganisms and the intermediates 3a-3g and bishetrocyclics 4a-4g also screened for their in vitro antimicrobial activities.
11 citations
TL;DR: In this article, a cyclization of 2,4-diaryl-3-azabicyclo[3.3.1]nonan-9-yl]-5-spiro-4-acetyl-2-(acetylamino)-Δ2-1, 3, 4-thiadiazoline derivatives (3a-h) have been synthesized by the cyclization.
8 citations
TL;DR: One pot synthesis of crown ether type chiral and achiral 2:2 oligomeric thiadiazolophane with (S)-BINOL and a methylene bis-naphthyl spacer unit has been achieved under simple and mild conditions by O-alkylation methodology as discussed by the authors.
Abstract: One pot synthesis of crown ether type chiral and achiral 2:2 oligomeric thiadiazolophane 1 and 3 and 3:3 oligomeric thiadiazolophane 2 and 4 with (S)-BINOL and a methylene bis-naphthyl spacer unit has been achieved under simple and mild conditions by O-alkylation methodology. Their photophysical and electrochemical properties revealed a higher degree of aggregation in 2:2 oligomer (1 and 3) and 3:3 oligomer cyclophanes 2 and 4 energy minimized calculations reveal that cyclophane with a bigger cavity has a lower heat of formation than cyclophane with a smaller cavity.
3 citations
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Book•
30 Sep 1997
TL;DR: In this article, the CHEC III is organized in 15 volumes and closely follows the organization used in the previous edition: Volumes 1 and 2: Cover respectively three and four-membered heterocycles, together with all fused systems containing a three- or four-measured heterocyclic ring.
Abstract: CHEC III is organized in 15 Volumes and closely follows the organization used in the previous edition: Volumes 1 and 2: Cover respectively three- and four-membered heterocycles, together with all fused systems containing a three- or four-membered heterocyclic ring. Volume 3: Five-membered rings with one heteroatom together with their benzo- and other carbocyclic-fused derivatives. Volumes 4, 5 and 6: Cover five-membered rings with two heteroatoms, and three or more heteroatoms, respectively, each with their fused carbocyclic compounds. Volumes 7, 8 and 9: Dedicated to six-membered rings with one, two, and more than two heteroatoms, respectively, again with the corresponding fused carbocylic compounds. Volumes 10, 11 and 12: Cover systems containing at least two directly fused heterocyclic five- and/or six-membered rings: of these Volume 10 deals with bi-heterocyclic rings without a ring junction heteroatom, and Volume 11 deals with 5:5 and 5:6 fused rings systems with at least one ring junction nitrogen, while Volume 12 is devoted to all other systems of five and/or six-membered fused or spiro heterocyclic rings with ring junction heteroatoms. Volumes 13 and 14: Seven-membered and larger heterocyclic rings including all their fused derivatives (except those containing three- or four-membered heterocyclic rings which are included in Volume 1 and 2, respectively). Volume 15: Author, ring and subject indexes.
8,174 citations
Book•
01 Jan 1961
TL;DR: In this article, it was shown that one of the most common types of known quantities of phenyl phenyl is phenyl oxide (POP) oxide, which is a phenyl-oxyoxy phenyl (PE)-oxyoxyphenyl) that can be obtained from phenyl compounds.
Abstract: A f t e r K e n d a l l ' s d i s c o v e r y [1] of the p h o t o g r a p h i c p r o p e r t i e s of 1 p h e n y l p r a z o l i d 3 o n e , m a n y s u b s t a n c e s of t h i s e l a s s b e c a m e known. A t t e m p t s w e r e m a d e to e l u c i d a t e t he r e l a t i o n s h i p b e t w e e n the s t r u c t u r e and p h o t o g r a p h i c p r o p e r t i e s of t h e s e s u b s t a n c e s [2, 3] and the m e c h a n i s m of t h e i r a c t i o n was s t u d i e d [4]. It was shown tha t t he r e a c t i o n c e n t e r in the m o l e cu le of a 1 a r y l p y r a z o l i d o n e in t he d e v e l o p m e n t p r o c e s s is t he p y r a z o l i d o n e r i n g [4, 5]. The o b j e c t of t he p r e s e n t w o r k w a s the s y n t h e s i s of s u b s t a n c e s t he m o l e e u l e s of wh ich would con t a in two p y r a z o l i d o n e r i n g s . T h e s e s u b s t a n c e s could be of i n t e r e s t in the d e v e l o p m e n t of l i g h t s e n s i t i v e c i n e m a t o g r a p h i c m a t e r i a l s . The s y n t h e s i s of the f i r s t r e p r e s e n t a t i v e s of t h i s c l a s s t h a t we have e f f e c t e d [6] s t a r t e d f r o m di ( 4 a m i n o phenyl) ox ide and 1, 2 d i ( 4 a m i n o p h e n y l ) e t h a n e .
2,673 citations
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01 Jan 2007
295 citations
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