Studies on the Structure of 1-Diazo-2- or 2-Diazo-1-naphthol and its 4-Sulfonic Acid
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چکیده
منابع مشابه
2-Diazo-1-(1,1-dioxothiomorpholin-4-yl)ethanone
In the mol-ecule of the title compound, C(6)H(9)N(3)O(3)S, at 105 K, the six-membered ring is predominantly found in the chair conformation, with 1.89 (14)% in the boat conformation. In the crystal structure, there are five inter-molecular C-H⋯O=C and C-H⋯O=S contacts less than 2.6 Å, as well as a weak C-H⋯N=N inter-action to the diazo group.
متن کامل3-Diazo-N-[(2S)-1-hydroxypropan-2-yl]-2-oxopropanamide
In the title compound, C(6)H(9)N(3)O(3), the 3-diazo-2-oxopropan-amide section of the mol-ecule is nearly planar, with a maximum deviation of 0.025 (1) Å from the mean plane of its constituent atoms. The diazo C=N=N angle is 178.0 (3)°. In the crystal, pairs of inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into infinite double chains along the [100] direction. The double ch...
متن کاملPreconcentration of Trace Vanadium with the Ion Pair of 2-Nitroso-1-Naphthol-4-Sulfonic Acid and Tetradecyldimethylbenzylammonium Chloride Onto Microcrystaline Naphthalene and Determination by Derivative Spectrophotometry
Vanadium is quantitatively retained on 2-nitroso-1-naphhthol-4-sulfonic acid tetradecyldimethlbenzyammonium chloride onto microcrystalline naphthalene in the pH range of 3.0-4.0 from a large volume of aqueous solutions of various alloys and synthetic samples. After filtration, the solid mass consisting of the vanadium complex and naphthalene was dissolved with 5.0 mL of dimethylformamide an...
متن کامل2-Diazo-1-(4-hydroxyphenyl)ethanone: a versatile photochemical and synthetic reagent.
α-Diazo arylketones are well-known substrates for Wolff rearrangement to phenylacetic acids through a ketene intermediate by either thermal or photochemical activation. Likewise, α-substituted p-hydroxyphenacyl (pHP) esters are substrates for photo-Favorskii rearrangements to phenylacetic acids by a different pathway that purportedly involves a cyclopropanone intermediate. In this paper, we sho...
متن کامل2‐Diazo‐1‐phenyl‐2‐((trifluoromethyl)sulfonyl)ethan‐1‐one: Another Utility for Electrophilic Trifluoromethylthiolation Reactions
2-Diazo-1-phenyl-2-((trifluoromethyl)sulfonyl)ethan-1-one (diazo-triflone) (2) is not only a building block but also a reagent. In this study, diazo-triflone, which was originally used for the synthesis of β-lactam triflones as a trifluoromethanesulfonyl (SO2CF3) building block under catalyst-free thermal conditions, is redisclosed as an effective electrophilic trifluoromethylthiolation reagent...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1964
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.84.10_967