ChemicalBook CAS DataBase List CUCURBITURIL

CUCURBITURIL synthesis

8synthesis methods

Product Name:CUCURBITURIL
CAS Number:80262-44-8
Molecular formula:C36H36N24O12
Molecular Weight:996.82

50-00-0 Synthesis

50-00-0
865 suppliers
$10.00/25g

57-13-6 Synthesis

57-13-6
713 suppliers
$5.00/5g

80262-44-8
112 suppliers
$39.00/250mg

Yield:80262-44-8 89.5%

Reaction Conditions:

Stage #1:urea with perchloric acid on silica gel;bis(trichloromethyl) carbonate in ethanol at 20; for 1 h;
Stage #2:formaldehyd in ethanol at 45 - 50; for 4 h;Reagent/catalyst;

Steps:

1-2 Example 2
Urea (0.1 mol) and triphosgene (30 mmol) were dissolved in ethanol (1.2L) at room temperature, Tf0HSi02 (4.0g) was added, stirred for 1.0 h, polymerised formaldehyde (2.0 mol, 60g) was added, and the temperature was raised to 45-50 ° C, and the reaction was further stirred for 4 h, the reaction solution was poured into ice water, filtered, and the cake was recrystallized to obtain pumpkin squash CB[6] (calculated molar yield was about 89.5%);the structure confirmation data is consistent with Example 1.

References:

Yangzhou Industry Polytechnic College;Zhao Lu;Han Ying;Li Mei;Li Gang CN108586470, 2018, A Location in patent:Paragraph 0023-0025; 0026; 0027

FullText

50-00-0 Synthesis

50-00-0
865 suppliers
$10.00/25g

496-46-8 Synthesis