Treatment of TiCl4 at low temperature with EtMgBr gives a compound that is unstable above -70 oC. However, treatment of TiCl4 at low temperature with MeLi or with LiCH2SiMe3 gives compounds that are stable at room temperature. Explain these observations. Start with reactions written in .doc file. And explain by drawing what is happening to the first compound above -70 oC.

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For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

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Neither model is able to show the reactivity of potassium.