Geminal diboronates and diarylmethyl boronates are versatile building blocks in synthetic chemistry.We here reported a highly efficient approach for the synthesis of gem-bisborylalkanes and diarylmethyl boronates via ...Geminal diboronates and diarylmethyl boronates are versatile building blocks in synthetic chemistry.We here reported a highly efficient approach for the synthesis of gem-bisborylalkanes and diarylmethyl boronates via cobalt-catalyzed deoxygenative borylation of diaryl ketones.This borylation protocol is compatible with a broad range of functionalized aryl groups,providing access to a wide array of boronic esters.The resulting boronic esters can be further transformed to various cross-coupling products and TPEs that represent important structural motifs in organic chemistry and materials science.展开更多
Summary of main observation and conclusion The stereoselective preparation of vinylboronates via rhodium-catalyzed borylation of E/Z mixtures of vinyl actetates is described, and this method was also extended to synth...Summary of main observation and conclusion The stereoselective preparation of vinylboronates via rhodium-catalyzed borylation of E/Z mixtures of vinyl actetates is described, and this method was also extended to synthesis of vinyldiboronates. These transformations feature high functional group compatibility and mild reaction conditions. Control experiments support a mechanism that involved a Rh-catalyzed borylation-isomerization sequence. The isomerization of (Z)-vinylboronates to (E)-isomers was also demonstrated.展开更多
Luminescent materials with efficient aggregate-state emissions are of growing interest due to their widespread applications in chemo-/biosensing and optoelectronic devices.Aggregation-induced emission(AIE)opens a new ...Luminescent materials with efficient aggregate-state emissions are of growing interest due to their widespread applications in chemo-/biosensing and optoelectronic devices.Aggregation-induced emission(AIE)opens a new avenue for the applications of aggregate-state luminescent materials.Among the AIE luminogens(AIEgens),tetraarylethylenes(TAEs)are typical AIEgens with a simple molecule scaffold and could be utilized as a framework for further elaboration,enabling structure-property-function relationship studies and multi-functional applications.Since the existing approaches for the preparation of tetraarylethenes(TAEs)typically produce stereoisomeric mixtures,stereoselective synthesis of tetraarylethenes with desired geometry is a great challenge.In this review,we systematically compile the synthetic methodologies for the construction of TAEs in excellent regio-and stereoselectivities.The virtues and limitations of each methodology are discussed in detail as well.Meanwhile,the applications and the differences of properties between TAEs stereoisomers are introduced.展开更多
基金financial support from the National Natural Science Foundation of China(Nos.22271086 and 21971059)the National Program for Thousand Young Talents of Chinathe Fundamental Research Funds for the Central Universities。
文摘Geminal diboronates and diarylmethyl boronates are versatile building blocks in synthetic chemistry.We here reported a highly efficient approach for the synthesis of gem-bisborylalkanes and diarylmethyl boronates via cobalt-catalyzed deoxygenative borylation of diaryl ketones.This borylation protocol is compatible with a broad range of functionalized aryl groups,providing access to a wide array of boronic esters.The resulting boronic esters can be further transformed to various cross-coupling products and TPEs that represent important structural motifs in organic chemistry and materials science.
基金the National Natural Science Foundation of China(Grant no.21702056)the National Program for Thousand Young Talents of Chinathe Fundamental Research Funds for the CentraI Universities.
文摘Summary of main observation and conclusion The stereoselective preparation of vinylboronates via rhodium-catalyzed borylation of E/Z mixtures of vinyl actetates is described, and this method was also extended to synthesis of vinyldiboronates. These transformations feature high functional group compatibility and mild reaction conditions. Control experiments support a mechanism that involved a Rh-catalyzed borylation-isomerization sequence. The isomerization of (Z)-vinylboronates to (E)-isomers was also demonstrated.
基金National Natural Science Foundation of China,Grant/Award Numbers:21971059,21702056National Program forThousandYoungTalents of ChinaFundamental Research Funds。
文摘Luminescent materials with efficient aggregate-state emissions are of growing interest due to their widespread applications in chemo-/biosensing and optoelectronic devices.Aggregation-induced emission(AIE)opens a new avenue for the applications of aggregate-state luminescent materials.Among the AIE luminogens(AIEgens),tetraarylethylenes(TAEs)are typical AIEgens with a simple molecule scaffold and could be utilized as a framework for further elaboration,enabling structure-property-function relationship studies and multi-functional applications.Since the existing approaches for the preparation of tetraarylethenes(TAEs)typically produce stereoisomeric mixtures,stereoselective synthesis of tetraarylethenes with desired geometry is a great challenge.In this review,we systematically compile the synthetic methodologies for the construction of TAEs in excellent regio-and stereoselectivities.The virtues and limitations of each methodology are discussed in detail as well.Meanwhile,the applications and the differences of properties between TAEs stereoisomers are introduced.
