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1228184-79-9

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1228184-79-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228184-79-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,1,8 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1228184-79:
(9*1)+(8*2)+(7*2)+(6*8)+(5*1)+(4*8)+(3*4)+(2*7)+(1*9)=159
159 % 10 = 9
So 1228184-79-9 is a valid CAS Registry Number.

1228184-79-9Downstream Products

1228184-79-9Relevant articles and documents

Synthesis, structure, and functionalization of homo heterocalix[2]arene[2] triazines: Versatile conformation and cavity structures regulated by the bridging elements

Chen, Yin,Wang, De-Xian,Huang, Zhi-Tang,Wang, Mei-Xiang

supporting information; experimental part, p. 3786 - 3796 (2010/08/20)

Figure presented A number of homo[2] and homo[4] heterocalix[2]arene[2] triazines were synthesized through a general and good-yielding fragment coupling approach starting from cyanuric halides, aromatic and aliphatic diols, and diamines under very mild reaction conditions. While homo[2] tetraazacalix[2] arene[2]triazine gave a twisted and pinched 1,2-alternate conformer, almost all homo[2] heterocalix[2]arene[2]triazines adopted different partial cone conformations in the solid state. Homo[4] heterocalix[2]arene[2]triazines yielded more diverse conformational structures including partial cone, pinched partial cone, 1,2-alternate and twisted 1,2-alternate, depending on the nature of bridging moieties. On the basis of 1H NMR spectra, homo[2] and homo[4] heterocalix[2]arene[2]triazines were fluxional macrocycles in solution, and they underwent rapid conformation interconversion at different temperatures. Efficient and straightforward nucleophilic aromatic substitution reaction and palladium-catalyzed cross-coupling reactions on chlorotriazine rings, and the nucleophilic alkylation reaction on the bridging nitrogen atoms led to the construction of various highly functionalized homo heterocalix[2]arene[2] triazine derivatives.

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