Organic Chemistry: How do you synthesize benzaldehyde from benzene
The synthesis of mandelic acid starts from benzaldehyde:
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Synthesis description for preparation of BENZALDEHYDE
But all that is sanity, backed up by hard data. Panera’s ad is a cute graphic is all about how sodium benzoate is found in fireworks, so it shouldn’t be in your delicious food. The problem is, a goodly number of Panera’s menu items – such as all the ones with cheese, and all the ones with berries – contain plenty of sodium benzoate already, in some proportion with benzoic acid. It’s stupid and disingenuous of them to pretend that they’re protecting their customers from evil industrial chemicals, when the same stuff is found in their own ingredients. As many readers will appreciate, you can play the same game with all sorts of other ingredients. Lactic acid (found in milk) is used in . Palmitic acid, found in meats, coconut oil, sunflower seeds and many other foods, is used in . 2,3-butanediol (a flavor component of many cheeses) is used in . I could go on all day; any organic chemist could. The entertainment value goes down after a while, because the fundamental premise (Good Healthy Natural Stuff versus Toxic Sludge) is stupid to start with.
On the Mechanism of the Gattermann Aldehyde Synthesis
Values reported by, or that could be estimated from, others compare well, considering the various exposure times: 1.27 in rats (Pyykkö et al., 1977); 2.50 in rats (Pryor et al., 1978); 1.26 in mice (Ogata et al., 1974); 2.05 mice (Bruckner & Peterson, 1981a).