P-ABSA

The carbocyclic [6-7] core of guanacastepenes was prepared by. D. Trauner et al. using the intramolecular reaction between carbenoids derived from diazo carbonyl compounds and furans. The required diazo carbonyl substrate was synthesized using p-acetamidobenzenesulfonyl azide (p-ABSA) as the diazo-donor component in the Regitz diazo transfer reaction. 

For the detection of inorganic ions, such as Cd, Wang et al. have proposed electropolymerization of p-aminobenzene sulfonic acid [p-ABSA] [113], First, GO is electrochemically reduced to RGO and simultaneously deposited at a constant potential onto a GCE surface. Electrodeposition of poly-ABSA was then carried out voltammetrically in the presence of RGO and the composite film was used for SWASV detection of Cd. Therefore, tin (replacing bismuth or mercury] was electrodeposited on top of the poly(p-ABSA] layer. The composite electrode showed good stripping performance for the analysis of Cd, wider potential window compared to bare GCE and GCE covered with only Sn, and gave a linear response from 1.0 to 70.0 gg L with a detection limit of 0.05 gg L-i. 

Related Reagents. Methanesulfonyl Azide (MsNs) p-Toluenesulfonyl Azide (p-TSA) p-Acetamidobenzenesulfonyl Azide (p-ABSA) 4-Carboxybenzenesulfonylazide (/>-CBSA) p-Dodecylbenzenesulfonyl Azide. 

DEPAA= diethyl phosphonoacetic acid T3P= propyl phosphonic anhydride DIPEA= A/,A/-diisopropylethylamine p-ABSA= 4-acetamidobenzenesulfonyl azide LHMDS= lithium bis(trimethylsilyl)amide... 

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