Sulfur chemistry is different in some cases from oxygen chemistry. Which is an e

Question

Sulfur chemistry is different in some cases from oxygen chemistry. Which is an example (circle any). a) sulfur can form disulfides (R-S-S-R). and oxygen can't form similar species b) sulfur can form hydrosulfide ion (HS^-), and oxygen can't form a similar species c) sulfur can form thiols (R-S-H). and oxygen can't form similar species d) sulfur can form sulfoxides (R-S(=O)-R), and oxygen can't form similar species In a Williamson ether synthesis, which of the following is the most productive reaction? (circle one) a) a secondary alcoholate and a primary alkyl halide b) a phenolate and a tertiary alkyl halide c) a primary alcoholate and a secondary halide d) a tertiary alcoholate and a tertiary alkyl halide In the mass spectrum of 4-octanol (C_8H_18O, parent M = 130. doesn't survive), a base peak might be expected at ... (circle one) (masses: C = 12, H = 1, O = 16) a) 112; or M - H_2O b) 73, or M-C_4H_9 c) 128, or M - H_2 d) 115, or M-CH_3 Ozonolysis (O_3, then Zn, H_2O) would product a single organic product with which of the following? (circle one) a) 1-butene b) 1-pentene c) 2-butene d)2-pentene

Explanation / Answer

(15)

(d) Sulphur can form sulphoxides but oxygen cannot.

(16)

(b) a phenolate and tertiary alkyl halide are best suitabel

(17)

(B) 73 - butyl carbocation

(18)

(c) CH3CH=CHCH3 ----O3,Zn/H2O-----> 2 CH3CHO

remaining can form two different carbonyl compounds.

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