Design and Synthesis of Laser-Activatable Tetrazoles for a Fast and Fluorogenic Red-Emitting 1,3-Dipolar Cycloaddition Reaction
摘要:
The design and synthesis of a new class of laser light activatable tetrazoles with extended it-systems is reported. Upon 405 nm laser light irradiation, these bithiophene-substituted tetrazoles underwent extremely fast 1,3-dipolar cycloaddition reactions with dimethyl fumarate with second-order rate constants approaching 4000 M-1 s(-1). The resulting pyrazoline cycloadducts exhibited solvent-dependent red fluorescence, making these tetrazoles potentially useful as fluorogenic probes for detecting alkenes in vivo.
Design and Synthesis of Laser-Activatable Tetrazoles for a Fast and Fluorogenic Red-Emitting 1,3-Dipolar Cycloaddition Reaction
摘要:
The design and synthesis of a new class of laser light activatable tetrazoles with extended it-systems is reported. Upon 405 nm laser light irradiation, these bithiophene-substituted tetrazoles underwent extremely fast 1,3-dipolar cycloaddition reactions with dimethyl fumarate with second-order rate constants approaching 4000 M-1 s(-1). The resulting pyrazoline cycloadducts exhibited solvent-dependent red fluorescence, making these tetrazoles potentially useful as fluorogenic probes for detecting alkenes in vivo.