Cu(i) catalysed annulation of isothiocyanates/isocyanates with 2-iodo-sulfonamides: synthesis of benzodithiazines, benzothiadiazinones, benzothiazinylidene-anilines and benzothiazolylidene-anilines

2019 ◽  
Vol 17 (28) ◽  
pp. 6880-6894 ◽  
Author(s):  
K. Sandeep ◽  
Alla Siva Reddy ◽  
K. C. Kumara Swamy
Keyword(s):  
Catalysed Reaction ◽  
Aryl Isocyanates ◽  
Aryl Isothiocyanates

Cu(i)-catalysed reaction of 2-iodobenzene sulfonamides with aryl isothiocyanates leads to benzodithiazines but the corresponding reaction with aryl isocyanates affords benzothiadiazinones.

scholarly journals Diaminomaleonitrile as a versatile building block for the synthesis of 4,4′-biimidazolidinylidenes and 4,4′-bithiazolidinylidenes

2018 ◽  
Vol 24 (6) ◽  
pp. 303-306
Author(s):  
Mahsa Doomanlou ◽  
Hassan Kabirifard ◽  
Mehdi Asadi ◽  
Maryam Moloudi ◽  
Seyedeh Sara Mirfazli
Keyword(s):  
Building Block ◽  
Ring Closure ◽  
Wide Range ◽  
New Strategy ◽  
Aryl Isocyanates ◽  
Aryl Isothiocyanates

Abstract Ring closure reactions of diaminomaleonitrile (DAMN) with electrophilic aryl isocyanates and aryl isothiocyanates lead to the formation of the target 5,5′-diimino-1,1′-diaryl-4,4′-biimidazolidinylidene-2,2′-diones 2a,b and 2,2′-diarylimino-4,4′-bithiazolidinylidenes 4a–e, respectively. The protocol provides a new strategy for the synthesis of a wide range of alkenes with two electron-donating and two withdrawing substituents of DAMN in moderate to good yields.

scholarly journals Reactions of 2-Triphenylphosphoimino-1-azaazulenes with Aryl Isocyanates and Aryl Isothiocyanates.

ChemInform ◽  
2006 ◽  
Vol 37 (17) ◽  
Author(s):  
Kentaro Nagamatsu ◽  
Ai Serita ◽  
Jun-Hau Zeng ◽  
Hiroyuki Fujii ◽  
Noritaka Abe ◽  
...  
Keyword(s):  
Aryl Isocyanates ◽  
Aryl Isothiocyanates

Synthesis of 2-aryl-2H-indazoles by base catalysed reaction of 2-nitrobenzyl triphenylphosphonium bromide and aryl isocyanates

2000 ◽  
Vol 41 (50) ◽  
pp. 9893-9897 ◽  
Author(s):  
Abutariq Taher ◽  
Sweta Ladwa ◽  
Srinath Thirumalai Rajan ◽  
George W Weaver
Keyword(s):  
Catalysed Reaction ◽  
Aryl Isocyanates ◽  
Triphenylphosphonium Bromide

ChemInform Abstract: Reaction of 6-Aryl-1,5-diazabicyclo[3.1.0]hexanes with Aryl Isocyanates and Aryl Isothiocyanates.

ChemInform ◽  
2001 ◽  
Vol 32 (12) ◽  
pp. no-no
Author(s):  
Alexander P. Molchanov ◽  
Denis I. Sipkin ◽  
Yuri B. Koptelov ◽  
Rafael R. Kostikov
Keyword(s):  
Aryl Isocyanates ◽  
Aryl Isothiocyanates

scholarly journals Reactions of 2-Triphenylphosphoimino-1-azaazulenes with Aryl Isocyanates and Aryl Isothiocyanates

Heterocycles ◽  
2006 ◽  
Vol 67 (1) ◽  
pp. 337 ◽  
Author(s):  
Noritaka Abe ◽  
Kentaro Nagamatsu ◽  
Ai Serita ◽  
Jun-Hau Zeng ◽  
Hiroyuki Fujii ◽  
...  
Keyword(s):  
Aryl Isocyanates ◽  
Aryl Isothiocyanates
Sign in / Sign up

Export Citation Format

Share Document