3- methyl-3-pentyl chloroformate

Peptide synthesis /-Amyl chloroformate. Bis-(2,4-dinitrophenyl)carbonate. Bis-o-phenylene pyrophosphite. i-Butyl chloroformate. sec-Butyl chloroformate. /-Butyl chloroformate. /-Butyl 2,4,5-trichlorophenyl carbonate. CopoIy(ethylene-N-hydroxymaleimide). N,N-Diethyl-I-propynylamine. Di-(p-nitrophenyl)sulfate. Ethoxyacetylene. N-Ethoxycarbonyl-2-ethoxy-l,2-dihydroquinoline. N-Ethylbenzisoxazolium fluoroborate. Ethyl chloroformate. N-Ethyl-5-phenylisoxazolium-3 -sulfonate. N-Hydroxysuccinimide trifluoroacetate. Methyl-morpholine. 4-Methylthiophenol. p-Nitrophenol. Oxalylchloride. Pentachlorophenol. Pentamethylbenzyl chloride. /-Pentyl chloroformate. Phenacyl bromide. Polyhexamethylene carbodiimide. Tetraethyl pyrophosphite. 1,2,4-Triazole. 

FIGURE 3. The NMR spectra of the two racemic diastereomers of lV-(4-methyl-2-pentyl)-a-methoxy-a-trifluoromethylphenylacetamide prepared from racemic a-methoxy-a-(trifluoromethyl)phenylacetic acid [MTPA, ( )-83] and racemic 4-methyl-2-pentylamine [( )-84] (A) 60-MHz proton spectrum in chloroform-4 with tetramethylsilane (TMS) as the internal standard (B) 94.1-MHz fluorine-19 spectrum in chloroform-4 with trifluoroacetic acid as the internal standard. Reprinted with permission from Reference 76. Copyright (1969) American Chemical Society... 

C21H26O4 CHCI3, 4,6-Di-t-butyl-4a-hydroxy-8-methoxydibenzofuran-2(4aH)-one chloroform solvate, 45B, 352 C21H3 0O2 f 2,3,4,4a-Tetrahydro-3-methyl-6-pentyl-8-hydroxy-9,9-di-methylxanthene, 43B, 416... 

During the synthesis of tetracenes 42, we encountered the following unexpected findings (1) The color of butyl derivative 42c in the solid-state was a mixture of red and yellow, indicating that two polymorphs existed, and each of the two colors (42c-form A or 42c-form B) could be separated by evaporation from chloroform or hexane solution, respectively [49]. (2) The solid-state colors of the derivatives of 42 ranged from yellow (ethyl (42a) and butyl (42c-form B)) to orange (methyl (32), propyl (42b), and pentyl (42d)) to red (butyl (42c-form A) and hexyl (42e)) [50]. Thus, the color... 

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