The host–guest type molecular size matching strategy, which embodied intramolecular hydrogen bond, aromatic nucleophilic substitution and nucleophilic addition, was utilized to develop a fluorescent probe for GSH specific detection and in situ imaging in organisms.
A novel
domino reaction from benzaldehydes and 2-acetylfuran/2-acetylthiophene
with sodium sulfide was developed to synthesize a series of tetrahydrothiopyran
(THTP) derivatives. The reaction proceeded well to construct a tetrahydrothiopyran
ring and five new bonds in one step. A mechanism is proposed, involving
a stepwise Aldol/double Michael addition/Aldol (AMMA) reaction cascade.
In this transformation, sodium sulfide acts as a nucleophile and base.
This method is characterized by transition-metal-free, commercially
available starting materials and mild reaction conditions.
− Four excellent halogen-free biphosphonate flame retardants (EBDMP, EBDEP, MBDMP, MBDEP) were synthesized through polycondensation and Arbuzov rearrangement reactions without using any solvents. The products were characterized by ESI-MS, FT-IR and 1 H NMR. The application of EBDEP in polyurethane soft foam was studied and the results illustrated its excellent flame-proofing properties
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