Amine-Promoted β-Elimination of a β-Aryloxy Aldehyde for Fluorogenic Chemodosimeters
摘要:
We previously reported a fluorescent chemodosimeter for ozone. The beta-elimination step after the ozonolysis of the chemodosimeter was too slow to be practical for real-time monitoring of ozone. We examined primary, secondary, and tertiary amines at various pHs. It was found that pyrrolidine in pH 9 buffer could accelerate the elimination to generate a fluorescence signal. The elimination step is now sufficiently rapid to monitor ozone exposure in real time. We also discovered that azetidine was distinctly effective for the same elimination reaction in a pH 6 buffer.
Amine-Promoted β-Elimination of a β-Aryloxy Aldehyde for Fluorogenic Chemodosimeters
摘要:
We previously reported a fluorescent chemodosimeter for ozone. The beta-elimination step after the ozonolysis of the chemodosimeter was too slow to be practical for real-time monitoring of ozone. We examined primary, secondary, and tertiary amines at various pHs. It was found that pyrrolidine in pH 9 buffer could accelerate the elimination to generate a fluorescence signal. The elimination step is now sufficiently rapid to monitor ozone exposure in real time. We also discovered that azetidine was distinctly effective for the same elimination reaction in a pH 6 buffer.
A selective, fluorescent “turn-on” probe and method for the detection of ozone in biological and atmospheric samples, wherein the method of detecting ozone in a sample comprises the steps of (1) contacting the sample with a fluorophore capable of undergoing allylic ether or allylic ester cleavage and (2) detecting fluorescence in the sample.
US8361802B2
申请人:——
公开号:US8361802B2
公开(公告)日:2013-01-29
Amine-Promoted β-Elimination of a β-Aryloxy Aldehyde for Fluorogenic Chemodosimeters
作者:Amanda K. Leslie、Dandan Li、Kazunori Koide
DOI:10.1021/jo200947e
日期:2011.8.19
We previously reported a fluorescent chemodosimeter for ozone. The beta-elimination step after the ozonolysis of the chemodosimeter was too slow to be practical for real-time monitoring of ozone. We examined primary, secondary, and tertiary amines at various pHs. It was found that pyrrolidine in pH 9 buffer could accelerate the elimination to generate a fluorescence signal. The elimination step is now sufficiently rapid to monitor ozone exposure in real time. We also discovered that azetidine was distinctly effective for the same elimination reaction in a pH 6 buffer.