Complete the statement, "Cyclooctadeca-1,3,5,7,9,11,13,15,17-nonaene [C18H18] is O antiaromatic; reacts with Bromine O antiaromatic; has 4n pi electrons O aromatic; has 4n+2 pi electrons O nonaromatic;is nonplanar O nonaromatic; more than 8 carbons compound because it

Compound A, C9H₁6 reacts with 1 molar equivalent(s) of hydrogen upon catalytic hydrogenation. A undergoes reaction with ozone, followed by Zn treatment, to give: CHỊCHỊCH CH3CCH₂CH₂CH₂CH₂CH₂CCH3 || Propose a structure for A.

On treatment with Cl2/hν, a compound with the formula C9H12 yields only a single monochloride. What is a possible structure of the compound?

The name of the parent six-membered sulfur-containing heterocycle is thiane. It is numbered beginning at sulfur. Multiple incorporation of sulfur in the ring is indicated by the prefixes di-, tri-, and so on. (a) How many methyl-substituted thianes are there? Which ones are chiral? (b) Write structural formulas for 1,4-dithiane and 1,3,5-trithiane. (c) Which dithiane isomer (1,2-, 1,3-, or 1,4-) is a disulfide?(d) Draw the two most stable conformations of the sulfoxide derived from thiane.

Calculate the number of degrees of unsaturation for each molecular formula, and propose two possible structures: (a) C8H12; (b) C10H10.

7.) Which of the following is the product of CH,CHO + [Ag(NH3)2J* + OH- – product + Ag + H,0 + NH3 (1) CH,COO- (2) CH,CH,O (3) CH,COOA9 (4) CH;O-

Compound D undergoes a reaction with hydrogen bromide, HBr to produce 2-bromobutane. D exists as cis-trans isomers and decolourises bromine solution in methylene chloride, CH2Cl2. (i) Draw and name the structure of compound D. (ii) Draw two (2) constitutional isomers of compound D.

(a) Cyclohexa-1,3-diene can be converted into a tetrasubstituted haloalkane when reacted with bromine in ether. Write a balanced chemical equation for the reaction that occurs and state the expected observation.  (b) Compound A and B are alkenes with the same molecular formula C5H10. Compound A is a branched-chain alkene while compound B is a straight-chain alkene. The reaction between compound A with hydrogen bromide produces major product C which is optically active.  (i) Draw TWO (2) possible structures for compound B. (ii) Outline the mechanism for the reaction between compound A with hydrogen bromide to form major product C.  (iii) Name the product formed when compound A undergoes bromination reaction.

Provide a systematic name of the following compound:

Compound A (C6H12O2) reacts with water, acid, and heatto yield compound B (C5H10O2) and compound C (CH4O).Compound B is acidic. Deduce possible structures of compounds A, B, and C