932-41-2 Usage
Chemical Properties
brown powder
Uses
2,3-Thiophenedicarboxaldehyde may be employed for the synthesis of TIPSE (triisopropylsilylethynyl)-substituted dibromoanthradithiophene (TIPSEBr2- AntDT).
General Description
2,3-Thiophenedicarboxaldehyde undergoes aldol reaction with (4aS,9R,9aR,10S)-11-(propan-2-ylidene)-2,3,4a,9,9a,10-hexahydro-9,10-methanoanthracene-1,4-dione under oxygen-free conditions affords (5aS,6S,11R,11aR)-14-(propan-2-ylidene)-5a,6,11,11a-tetrahydro-6,11-methanotetraceno[3,2-b]thiophene-5,12-dione.
Check Digit Verification of cas no
The CAS Registry Mumber 932-41-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,3 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 932-41:
(5*9)+(4*3)+(3*2)+(2*4)+(1*1)=72
72 % 10 = 2
So 932-41-2 is a valid CAS Registry Number.
InChI:InChI=1/C6H4O2S/c7-3-5-1-2-9-6(5)4-8/h1-4H
932-41-2Relevant articles and documents
Two chemodivergent anionic domino processes from cyclic α-nitroketones and aromatic aldehydes
Giorgi, Giorgio,Arroyo, Francisco J.,López-Alvarado, Pilar,Menéndez, J. Carlos
experimental part, p. 5582 - 5589 (2011/08/10)
Treatment of cyclic α-nitroketones and aromatic 1,2-dialdehydes with DBU in tetrahydrofuran containing small amounts of water proceeded through two chemodivergent one-pot domino pathways, whose outcome depended on the ring size of the starting nitroketone. Thus, α-nitrocyclohexanone underwent diastereoselective α′-arylmethylenation reactions through a nitroaldol/aldol/reverse nitroaldol mechanism. On the other hand, α-nitrocycloheptanone and α-nitrocyclooctanone afforded 2-nitroindane-1,2-diols containing three contiguous stereocenters in a highly diastereoselective fashion through a nitroaldol/retro-Dieckmann/intramolecular nitroaldol process.
