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Draw three molecules each with at least one chiral center, the molecules drawn must be neutral, the chiral centers each marked with a star.
(a) all elements are permitted
(b) elements C, H and Br must occur at least once in each molecule; other elements are not permitted.
Solution: {a) } @:n(n,a,L:.2)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; \<|>/\<@n(*,-90)|NH2>/`|O|\OH{a) } @:n(n,a,L:.2)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; HO\/<_(A-120)><_(A-60)>\<@n(*,-90)|OH>/`|O|\N<_(y.5)H>/\/`|O|\OH{a) } @:n(n,a,L:.2)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; |`/|O`|`\`|`\\`/||\//`|0/O\@n(*,-90)/\\/`||`\`//|{b) } @:n(n,a,L:.2)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; Br\@n(*,-90)<|>/\/{b) } @:n(n,a,L:.2)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; //<`|Br>\<@n(*,-90)/>|`/`\`|{b) } @:n(n,a,L:.3)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; -%-@n(*, 20)<\`/>/Br
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