{"id":184191,"date":"2025-01-19T12:37:53","date_gmt":"2025-01-19T12:37:53","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=184191"},"modified":"2025-01-19T12:37:55","modified_gmt":"2025-01-19T12:37:55","slug":"consider-the-cyclohexane-framework-in-a-chair-conformation","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/19\/consider-the-cyclohexane-framework-in-a-chair-conformation\/","title":{"rendered":"Consider the cyclohexane framework in a chair conformation"},"content":{"rendered":"\n

Consider the cyclohexane framework in a chair conformation, where carbon 1 has two substituents, X and Y. a. Label each position as axial or equatorial. b. On the same figure, label all positions that are gauche to the Y group on carbon 1. A bin may hold more than one label. Answer Bank x gauche quatorial 6 N 3 gauche<\/p>\n\n\n\n

The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n

To understand the chair conformation of cyclohexane and its substituents, let\u2019s analyze step by step:<\/p>\n\n\n\n

Chair Conformation of Cyclohexane:<\/strong><\/h3>\n\n\n\n

Cyclohexane adopts a chair conformation to minimize steric strain and angle strain, providing maximum stability. In this conformation:<\/p>\n\n\n\n

    \n
  • Each carbon atom has one axial<\/strong> position (pointing straight up or down) and one equatorial<\/strong> position (pointing slightly outward and parallel to the ring plane).<\/li>\n<\/ul>\n\n\n\n

    Labeling Positions (Axial or Equatorial):<\/strong><\/h3>\n\n\n\n
      \n
    1. Assume carbon 1 has substituents X and Y. Place carbon 1 at the top-right position of the chair for simplicity.<\/li>\n\n\n\n
    2. The substituent directly up or down at carbon 1 is axial<\/strong>. The other substituent (pointing outward) is equatorial<\/strong>.\n
        \n
      • Example: If X is up (axial), Y is equatorial, or vice versa.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Alternate axial and equatorial positions around the ring:\n
          \n
        • Carbons 2, 4, and 6 have axial positions pointing downward.<\/li>\n\n\n\n
        • Carbons 3 and 5 have axial positions pointing upward.<\/li>\n\n\n\n
        • Equatorial positions alternate similarly, pointing outward around the ring.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

          Identifying Gauche Interactions:<\/strong><\/h3>\n\n\n\n

          The term “gauche” refers to a dihedral angle of approximately 60\u00b0 between two groups in a Newman projection. For a substituent at carbon 1:<\/p>\n\n\n\n

            \n
          1. The substituent gauche to Y<\/strong> includes groups on carbons 2 and 6 in axial or equatorial positions.<\/li>\n\n\n\n
          2. For instance, if Y is equatorial:\n
              \n
            • The axial group at carbon 2 is gauche to Y.<\/li>\n\n\n\n
            • The equatorial group at carbon 6 is also gauche to Y.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

              Final Labels:<\/strong><\/h3>\n\n\n\n
                \n
              • Axial: Positions alternate between up and down, starting at carbon 1.<\/li>\n\n\n\n
              • Equatorial: Positions alternate parallel to the plane.<\/li>\n\n\n\n
              • Gauche: Groups on carbons 2 and 6.<\/li>\n<\/ul>\n\n\n\n

                Explanation:<\/strong><\/h3>\n\n\n\n

                This analysis considers the spatial relationship between substituents to minimize steric interactions. Labeling helps predict reactivity, conformation, and stability of cyclohexane derivatives.<\/p>\n","protected":false},"excerpt":{"rendered":"

                Consider the cyclohexane framework in a chair conformation, where carbon 1 has two substituents, X and Y. a. Label each position as axial or equatorial. b. On the same figure, label all positions that are gauche to the Y group on carbon 1. A bin may hold more than one label. Answer Bank x gauche […]<\/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-184191","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184191","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=184191"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184191\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=184191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=184191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=184191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}