{"id":228104,"date":"2025-06-07T03:20:14","date_gmt":"2025-06-07T03:20:14","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=228104"},"modified":"2025-06-07T03:20:16","modified_gmt":"2025-06-07T03:20:16","slug":"what-is-the-alternate-chair-conformation-of-the-following-compound","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/07\/what-is-the-alternate-chair-conformation-of-the-following-compound\/","title":{"rendered":"What is the alternate chair conformation of the following compound"},"content":{"rendered":"\n

What is the alternate chair conformation of the following compound? Multiple Cyclohexane<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

Correct Answer: II<\/strong><\/p>\n\n\n\n

\n\n\n\n

Explanation<\/h3>\n\n\n\n

The question is asking for the alternate chair conformation<\/strong> of a substituted cyclohexane ring. In this specific case, we’re shown a chair conformation of methylcyclohexane<\/strong> where the methyl group is in the axial position<\/strong> in the initial structure (Option I).<\/p>\n\n\n\n

In cyclohexane, the most stable conformation is the chair conformation<\/strong> because it minimizes torsional strain. Cyclohexane undergoes a chair flip<\/strong> (ring flip), a process that converts one chair form into another. During a ring flip:<\/p>\n\n\n\n

    \n
  • Axial groups become equatorial.<\/li>\n\n\n\n
  • Equatorial groups become axial.<\/li>\n\n\n\n
  • The relative cis\/trans<\/em> stereochemistry remains the same.<\/li>\n<\/ul>\n\n\n\n

    For the given molecule (structure I), the methyl group is in the axial position. Upon a chair flip:<\/p>\n\n\n\n

      \n
    • The methyl group will move from the axial position<\/strong> to the equatorial position<\/strong> on the opposite side of the ring.<\/li>\n\n\n\n
    • All hydrogens switch accordingly, maintaining the stereochemistry.<\/li>\n<\/ul>\n\n\n\n

      The most stable conformation for methylcyclohexane is the one where the bulky methyl group occupies the equatorial position<\/strong>, because this reduces 1,3-diaxial interactions and steric hindrance.<\/p>\n\n\n\n

      Now let\u2019s analyze the choices:<\/p>\n\n\n\n

        \n
      • Option I<\/strong> shows the original conformation with the methyl group axial.<\/li>\n\n\n\n
      • Option II<\/strong> shows the methyl group in the equatorial position on the same carbon, which matches the expected alternate conformation after a chair flip.<\/li>\n\n\n\n
      • Option III<\/strong> also has the methyl group axial but on a different carbon\u2014this is not the correct flip.<\/li>\n\n\n\n
      • Option IV<\/strong> shows a different substitution pattern entirely.<\/li>\n<\/ul>\n\n\n\n

        Thus, Option II<\/strong> correctly shows the alternate chair conformation<\/strong>, with the methyl group now in the equatorial<\/strong> position.<\/p>\n\n\n\n

        This alternate chair conformation (II) is more stable<\/strong> than the original (I), which has the methyl group in the axial position. Therefore, option II is both the correct alternate conformation and the more energetically favorable form.<\/p>\n\n\n\n

        \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

        What is the alternate chair conformation of the following compound? Multiple Cyclohexane The Correct Answer and Explanation is: Correct Answer: II Explanation The question is asking for the alternate chair conformation of a substituted cyclohexane ring. In this specific case, we’re shown a chair conformation of methylcyclohexane where the methyl group is in the axial […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-228104","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/228104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=228104"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/228104\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=228104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=228104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=228104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}