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My problem reaction. It did something different!
Ordinarily it makes some combination of brown solid and red-brown sludge. Whatever the red chemical is, it's an unwanted side product.
This reaction has had a persistant issue with one of the starting materials being insufficiently soluble, so I decided to increase the amount of solvent until it would all remain in solution when the thing was in an ice bath (which is the recommended state for part of the reaction). When I ran the reaction this time, there was no solid, and no red by-product. It made an amber-to-brown oil that I have yet to identify. The intended product is amber-to-orange in solution, and makes brown or orange crystals.
I hope I've stumbled on something that works better!
Ordinarily it makes some combination of brown solid and red-brown sludge. Whatever the red chemical is, it's an unwanted side product.
This reaction has had a persistant issue with one of the starting materials being insufficiently soluble, so I decided to increase the amount of solvent until it would all remain in solution when the thing was in an ice bath (which is the recommended state for part of the reaction). When I ran the reaction this time, there was no solid, and no red by-product. It made an amber-to-brown oil that I have yet to identify. The intended product is amber-to-orange in solution, and makes brown or orange crystals.
I hope I've stumbled on something that works better!