The paper discusses measures to improve the efficiency of plant for production methyl tert-butyl ether at JSC "Angarsk Petrochemical Company"

Abstract Sodium and potassium tert- butyl peroxide hydrates 2Na + ·2C 4 H 9 $${\text{O}}_{2}^{ - }$$ ·7H 2 O ( I ) 2K · 2C ·4H II were prepared. According to X-ray diffraction data (CIF files CCDC no. 2081025 2081024 )), the compounds are coordination polymers in which alkali metal atoms have C.N.(Na) of 6 or C.N.(K) 8. The crystal packings comprise layers with clearly defined hydrophobic surfa...

Recently, 7,16-di-tert-butyl-5,14-bis(4-(tert-butyl)phenyl)dibenzo[a,m]rubicene has been reported as a polycyclic aromatic hydrocarbon synthesized through peculiar Scholl reaction and exhibited promising properties for optical electronic applications. This compound previously crystallized solvate, but the presence of disordered solvent molecules hampered complete elucidation its crystal structu...

synthesis and cation selectivity of 25, 27, dipropoxy-26, 28, di-propoxy 5, 11, 17, 23, ptert-butyl calix[4]arene are studied in acetonitrile solution. the stability constants of differentcomplexes of calixarene (as a ligand) with alkali metal cations are determined at 25 °c by usingspectrophotometric technique.on the basis of calculations, complexation of calixarene with cs+and li+ are more fa...

(2S,4R)and (2S,4S)-perfluoro-tert-butyl 4hydroxyproline were synthesized (as Fmoc-, Boc-, and free amino acids) in 2−5 steps. The key step of each synthesis was a Mitsunobu reaction with perfluoro-tert-butanol, which incorporated a perfluoro-tert-butyl group, with nine chemically equivalent fluorines. Both amino acids were incorporated in model α-helical and polyproline helix peptides. Each ami...

The title compounds, rac-(1'R,2R)-tert-butyl 2-(1'-hydroxyethyl)-3-(2-nitrophenyl)-5-oxo-2,5-dihydro-1H-pyrrole-1-carboxylate, C(17)H(20)N(2)O(6), (I), rac-(1'S,2R)-tert-butyl 2-[1'-hydroxy-3'-(methoxycarbonyl)propyl]-3-(2-nitrophenyl)-5-oxo-2,5-dihydro-1H-pyrrole-1-carboxylate, C(20)H(24)N(2)O(8), (II), and rac-(1'S,2R)-tert-butyl 2-(4'-bromo-1'-hydroxybutyl)-5-oxo-2,5-dihydro-1H-pyrrole-1-car...

We report our results on nonlinear optical properties of 2(3), 9(10), 16(17), 23(24) tetra tert-butyl phthalocyanine and 2(3), 9(10), 16(17), 23(24) tetra tert-butyl Zinc phthalocyanine studied using Z-scan technique with 800 nm femtosecond and 532 nm nanosecond pulses. Nonlinear absorption behavior in both femtosecond and nanosecond domains was studied in detail. We observed three-photon absor...