Isocyanato

IsoxazoIine, 5-isocyanato-3-phenyI-pyrolysis, 6, 39 2-Isoxazoline, 4-methylene-synthesis, 6, 91... 

OCN) complexes have been characterized and the ligand is usually A -bonded (isocyanato)/ ... 

For the ring expansion of l-isocyanato-2-vinylcydopropane to l//-azepin-2(3//)-one, see Houben-Weyl, Vol.4/3, p605. 

B. Polymeric Urea [Benzene, diethenyl-, polymer with ethenylbenzene, [[[[(1 methylethyl)amino]carbonyt]amino]methyl] deriv.] A 10.0-g. portion of benzylamine polymer beads prepared as in Part A and 125 ml. of tetrahydrofuran (Note 6) are combined in a 300-ml., three-necked, round-bottomed flask equipped with a magnetic stirrer, a dropping funnel, and a condenser fitted with a gas-inlet tube A nitrogen atmosphere is established in the system, and the slurry is stirred while 1.35 g. (0.0159 mole) of isopropyl isocyanate [Propane, 2-isocyanato-] is added. This causes an exothermic reaction, which subsides after about 20 minutes. The mixture is then stirred at room temperature for 22 hours and at reflux for an additional 4 hours. The beads are collected by filtration, washed with 150-ml. portions of tetrahydrofuran (Note 6) and methanol, and dried under reduced pressure over calcium chloride to yield 9.09 g, of the isopropyl urea polymer. 

Propane, 2-isocyanato- [1795 48-8], 96 Propane, 1 mtro [108-03-2, 36 1,3-Propanedithiol [109-80-8],9 Propanoic acid, 2-chloro- [598-78-7], 70 Propanoic acid, 2,2-dimethyl- [75-98-9], 70 Propanoic acid, 2-iodo-3-mtro-, ethyl ester [57621-01-9], 65... 

This chapter embraces quinoxalines bearing nitrogenous substituents that are joined to the quinoxaline nucleus through their nitrogen atom. However, isocyano-, isocyanato-, and isothiocyanatoquinoxalines will be found in Chapter 7 to ensure that they are adjacent to quinoxalinecarbonitriles. 

QHioO 493-05-0) see Ropinirole 2-isocyanatodiphenyIniethane (C14H11NO 146446-96-0) see Perlapine l-[3-isocyanato-4-(phenyImethoxy)phenyl)ethanone (CifiHijNOj 55057-75-5) see Carbuterol 6 3-isocyanopenicillanic acid benzyl ester (Ci HifjNjOjS 53628-27-6) see Temocillin isoeugenol... 

Isocyanic acid, 2-(chIoroformyl)ethyl ester (8) Propanoyl chloride, 3-isocyanato- (9) (3729-19-9)... 

Iron tricarbonyl dieme complex, 57, 16 Isobutyl chloroform.ate, 59, 165 Isobutylene, 59, 164 Isobutyl fluoride, 5, 73 Isobutyryl chloride, 59, 29 Isocyanato acid chlotrides, from amino acids, 59, 200... 

Trichloromethyl chloroformate has proven effective in the preparation of N-carboxy-a-amino acid anhydrides from amino acids, and various compounds having isocyanate, acid chloride, and chloroformate groups.For example, trichloromethyl chloroformate may be used instead of phosgene in the preparation of 2-tert-butoxycarbonyloxyimino-2-phenylacetonitrile. The use of this reagent is illustrated here by the synthesis of 3-isocyanato-propanoyl chloride from 3-aminopropanoic acid hydrochloride. 

It is believed that equatorial substituents such as chlorine or bromine would increase the guest diameter beyond the allowed values (assuming that the guest molecules stack roughly parallel to the canal68)). Support for this comes from the study of fluorocyclohexane where the population of the axial conformer is not enhanced to any major extent70. Nitro-71) and cyano-cyclohexane, trans-l,2-dichloro-, trans-1,2-dibromo-, tram-1,4-dichloro-, trans-1,4-dibromo-, and trans-l-bromo-4-chloro-cyclohexane all pack most efficiently in the thiourea canals as the axial or diaxial conformer 68,72. Tram-2,3-dichloro-1,4-dioxane behaves similarly73. In contrast isocyanato-, tram-1,4-diiodo-, trans-1 -bromo-4-iodo-, and tram-1 -chloro-4-iodo-cyclohexane are present as mixtures of the axial/equatorial or diaxial/diequatorial conformations as appropriate 68,72). The reason for this anomalous behaviour of the iodosubstituted cyclohexanes is not clear. 

These silica-supported catalysts (Figure 13) are, according to their authors, more advantageous because the functionalization is performed from the easily available linker, 3-isocyanato-propyl-... 

In a recent study, a Fijian sponge, Axinyssa fenestratus, was found to elaborate four isothiocyanatoamorphanes (43-46) [45]. That this series of compounds may be antipodal to 32 from the Hawaiian Halichondria sp. was indicated by the spectral and optical data of 43 [(1 R,6S,1S, 1 OS)- 10-isocyanato-4-amorphene]. 

In several related studies that involved Ciocalypta and Phyllidia spp., optically inactive isonitrile 85 was part of the mixture from a Sri Lankan Phyllidia sp. The mixture also contained a minor isothiocyanate which was not identified [55]. The observation that 7-isocyano-7,8-dihydrobisabolene 88 and isocyanato 89 were obtained from separate collections of Ciocalypta spp. was surprising... 

Synthesis of 14C-chloroacetates of 2-demethylthiocolchicine, 197, of 3-demethyl-thiocolchicine, 198, of N-acetylcolchinol, 199, and of the 14C-9-isocyanato-9-deoxy-N-acetylcolchinol, 200... 

This blend was obtained by polymers mixture extrusion and extraction with the azeotropic mixture of hexane/ethanol, and modifying the obtained polymer surface by coupling of 4-isocyanato butanoic acid methyl ester (as a spacer molecule) to PVA blend, saponification of methyl ester groups and coupling of 4-amino-TEMPO (2,2,6,6-tetramethylpiperidine-l-oxyl) [229],... 

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