In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called High trans selectivity in the copper bis(oxazoline)-catalyzed asymmetric cyclopropanation of olefins by (trimethylsilyl)diazomethane, published in 2003-12-22, which mentions a compound: 132098-59-0, mainly applied to copper bisoxazoline asym cyclopropanation alkene trimethylsilyl diazomethane; stereoselective cyclopropanation copper bisoxazoline alkene trimethylsilyl diazomethane; olefin stereoselective cyclopropanation copper bisoxazoline trimethylsilyl diazomethane; cyclopropanecarboxylate phenyl preparation stereoselective cyclopropanation copper bisoxazoline trimethylsilyl diazomethane, Synthetic Route of C19H18N2O2.
Copper(I) bis(oxazoline) species are among the most enantioselective cyclopropanation catalysts that have been reported, although these catalysts generally give low diastereoselectivities. Greatly improved diastereoselectivities using (trimethylsilyl)diazomethane as the carbon source were observed Several bis(oxazoline) species that also give comparable or higher enantioselectivities with (trimethylsilyl)diazomethane compared to the more readily available Et diazoacetate were identified. The application of this methodol. to several olefins has been explored.
Compounds in my other articles are similar to this one(Bis((S)-4-phenyl-4,5-dihydrooxazol-2-yl)methane)Synthetic Route of C19H18N2O2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles