del Hoyo, Ana M.;Latorre, Alfonso;Diaz, Raul;Urbano, Antonio;Carreno, M. Carmen published 《Enantiopure Helical Ferrocene-Triazole-Quinone Triads: Synthesis and Properties》 in 2015. The article was appeared in 《Advanced Synthesis & Catalysis》. They have made some progress in their research.Safety of (1S)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride(Chunks or pellets) The article mentions the following:
The Cu(I)-catalyzed (2+3) cycloaddition between azido (or azidomethylene) ferrocenes and enantiopure (P)-14-(p-ethynylphenyl)-[5]-tetrahydro-helicenequinone afforded ferrocene-triazole-quinone triads, whereas diazido ferrocenes gave rise to the corresponding double triads. In reactions with 1,1′-diazidoferrocene, the use of CuI/MeCN or CuSO4/Na ascorbate/THF conditions allowed the divergent formation of an open chain dimeric structure or a 1,4-diaza-[4]-ferrocenophane resulting from an intramol. oxidative coupling of the two triazole units formed after the double cycloaddition process. The experimental procedure involved many compounds, such as (1S)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride(Chunks or pellets) (cas: 39637-74-6) .
(1S)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride(Chunks or pellets) (cas: 39637-74-6 Safety of (1S)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride(Chunks or pellets)) is a chiral derivatizing agent. It can be prepared by reacting (-)-(1S,4R)-camphanic acid with thionyl chloride.
Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics