Dnp, 2,4-dinitrophenyl

Abbreviations Cy, cyclohexylidene DNP, 2,4-dinitrophenyl Py, pyridine TIPS, -(PrOjSiOSilPrOj- rac., racemate r.t., room temperature A, reaction in dichloromethane B, reaction in benzene D, reaction in diglyme T, reaction in toluene. Yields are described in the order of products, drawn from the left to the right. The sum of the last two compounds. Inserted as a reference reaction. 

Scheme 4.10 Unexpected thermal rearrangement of Zincke aldehydes leads to some interesting reactivity (DNP = 2,4-dinitrophenyl)...

Abbreviations. DNP 2,4-dinitrophenyl Bz benzoyl Ac acetyl For formyl FMOC 9-fluorenyl-... 

Abbreviations. DNB dinitrobenzoyl DNP 2,4-dinitrophenyl DNZ 3,5-dinitrobenzyloxycarbonyl. CSP tert-butyl carbamoylated quinine based buffer ammonium acetate. 

SCHEME 11.4 Convergent concept demonstrated by the Lansbury group. Bn, benzyl cHex, cyclohexyl DIPEA, diisopropylethylamine DMSO, dimethyl sulfoxide DNP, 2,4-dinitrophenyl HBTU, 2-(l//-benzotriazol-l-yl)-l,l,3,3-tetramethyluronium hexafluorophosphate HOBt, 1-hydroxybenzotriazole Ts, tosyl. 

DNP = 2,4-dinitrophenyl DBD = 7-dimethylamino-2,l,3-benzoxadiazol-4-yI DNB = 3,5-dinitrobenzoyl Bz = benzoyl Ac = acetyl For = formyl FMOC = 9-fluorenylmethoxycarbonyl DNZ = 3,5-dinitrobenzyloxycarbonyl PNZ = 4-nitrobenzyloxycaibonyl NVfXT = 6-nitroveratryloxycarbonyl Z = benzyloxycarbonyl BOC = /m.-butoxycarbonyl DNS = dairsyl or 5-dimethylamino-1-naphthylsulphonyl. eo = elution order, configuration of the first eluting enantiomer. 

Boc, ferf-butoxycarbonyl Tos, tosyl Dnp, 2,4-dinitrophenyl Fmoc, 9-fluorenylmethoxycarbonyl Trt, trityl 2,6-Dmbz, 2,6-dimethoxybenzoyl Bom, benzyloxymethyl. 

Treatment of the heptapeptide with 2,4-dinitrofluorobenzene followed by incomplete hydrolysis gave, among other products valine labeled at the a-amino group, lysine labeled at the s-amino group, and a dipeptide, DNP—VL (DNP = 2,4-dinitrophenyl-). 

Schlossman and Levine (30) prepared antibodies in guinea pigs against poly-L-lysine to which Dnp (2,4-dinitrophenyl) groups were coupled at the a-amino position ... 

Abbreviations Ala, polyalanylated Dnp, 2,4-dinitrophenyl Tnp, 2,4,6-trinitro-phenyl N, derived from normal serum. Designations in parentheses show the source of H or L chains used in the recombinant molecule. 

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