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Taming tosyl azide: the development of a scalable continuous diazo transfer process.

Deadman BJ1, O'Mahony RM, Lynch D, Crowley DC, Collins SG, Maguire AR.
Organic & biomolecular chemistry.Org Biomol Chem.2016 Apr 7;14(13):3423-31. doi: 10.1039/c6ob00246c. Epub 2016 Mar 9.
Heat and shock sensitive tosyl azide was generated and used on demand in a telescoped diazo transfer process. Small quantities of tosyl azide were accessed in a 'one pot' batch procedure using shelf stable, readily available reagents. For large scale diazo transfer reactions tosyl azide was generate
PMID 26959187

An updated synthesis of the diazo-transfer reagent imidaz-ole-1-sulfonyl azide hydrogen sulfate.

Potter GT, Jayson GC, Miller GJ, Gardiner JM.
The Journal of organic chemistry.J Org Chem.2016 Mar 21. [Epub ahead of print]
Imidazole-1-sulfonyl azide and salts thereof are valuable reagents for diazo transfer reactions, most particularly direct conversion of primary amines to azides. The parent reagent and its HCl salt present stability and detonation risks, but the hydrogen sulfate salt has been reported to be signific
PMID 26998999

A Sequential Homologation of Alkynes and Aldehydes for Chain Elongation with Optional (13) C-Labeling.

Brunner A1, Hintermann L2.
Chemistry (Weinheim an der Bergstrasse, Germany).Chemistry.2016 Feb;22(8):2787-92. doi: 10.1002/chem.201504248. Epub 2016 Jan 20.
Terminal alkynes (RCCH) are homologated by a sequence of ruthenium-catalyzed anti-Markovnikov hydration of alkyne to aldehyde (RCH2 CHO), followed by Bestmann-Ohira alkynylation of aldehyde to chain-elongated alkyne (RCH2 CCH). Inverting the sequence by starting from aldehyde brings about the recipr
PMID 26788864

北村充
有機合成化学協会誌 72(1), 14-25, 2014
… 2-Azido-1,3-dimethylimidazolinium chloride (ADMC) and its corresponding hexafluorophosphate (ADMP) were found to be safe and efficient diazo-transfer reagents to various organic compounds. … ADMC and ADMP reacted with 1,3-dicarbonyl compounds under mild basic conditions to give 2-diazo-1,3-dicarbonyl compounds in high yields, which are easily isolated because the by-products are highly soluble in water. …
NAID 130003395367

Simultaneous Determination of Nitrite and Nitrate Ions by Air-Segmented Amplitude-Modulated Multiplexed Flow Analysis

, , [他],
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 28(5), 523-525, 2012-05-10
… Downstream, the absorbance of the diazo-coupling product is monitored after the merging of both solutions with a Griess reagent. …
NAID 10030757752