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- HO HO. OH base CI EIO- C-OEt epichlorohydrin OH NaOEt 2,6-dihydroxy- acetophenone *Na O2C. .CO2 Na* NaOH, H2O II OH Cromolyn sodium Cromolyn sodium, developed during the 1960s, has been used to prevent allergic reactions primarily affecting the lungs, as, for example, exercised- induced emphysema. It is thought to block the release of histamine, which prevents the sequence of events leading to swelling, itching, and constriction of bronchial tubes. v Cromolyn sodium is synthesized in the above series of steps. rch 31% 11:24 P 4/20/20-(please show reaekson and question information dont use hend raiting)OH conc H3PO4 A A MCPBA CH₂Cl₂ B NaOH H₂O 8. Identify the products A,B and C.
- Draw the major product of this reaction. Ignore inorganic byproducts. CI CH3SH pyridine CPredict the products and indicate the relative stereochemistry for the following transformations. When necessary, indicate the major product. 1. Mel (excess), THE 2. Ag20, H20 3. heat H2N Me 4. cat. Cp2La(NM@2) H2N Me 1. NaOMe, MEOH, heat Me Me Me 2. NaCN, DMF 3. NH4Cl(aq) 1. ΚΗ (2.05 equiv) 18-crown-6, THF 2. Br- Br Me OEt 3. H30*, heatjrj
- Draw the major product of this reaction. Ignore inorganic byproducts. 1. LIAIH4 2. H₂O CI Oa) b) c) d) type type OEt type SN ₂ HI ether Br₂, H₂O alkere in a) NaOEt/EtOH b) neutralize type elimination Ixp a) cH₂ B‹ b) NaOH you c) aq. malonic Ester Synthesis aq, HCl OHOH Cl what reagent and type of reaction has happened? (A HCI, H2O ; halohydrin formation (B C12, H20 ; halohydrin formation c) 2HCI ; hydrohalogenation D C12, H20 ; halogenation
